Update the pinned version of zlint from v2.2.1 to v3.1.0.
Also update the relevant path from v2 to v3 in both go.mod
and in individual imports. Update the vendored files to match.
No changes from v2.2.1 to v3.1.0 appear to affect the lints
we directly care about (e.g. those that we explicitly ignore).
Fixes#5206
Fixes#3837
```
$ go test google.golang.org/grpc/...
ok google.golang.org/grpc 24.275s
? google.golang.org/grpc/balancer [no test files]
? google.golang.org/grpc/balancer/base [no test files]
ok google.golang.org/grpc/balancer/grpclb 7.271s
? google.golang.org/grpc/balancer/grpclb/grpc_lb_v1 [no test files]
ok google.golang.org/grpc/balancer/roundrobin 0.427s
ok google.golang.org/grpc/benchmark 0.006s [no tests to run]
? google.golang.org/grpc/benchmark/benchmain [no test files]
? google.golang.org/grpc/benchmark/benchresult [no test files]
? google.golang.org/grpc/benchmark/client [no test files]
? google.golang.org/grpc/benchmark/grpc_testing [no test files]
ok google.golang.org/grpc/benchmark/latency 1.012s
ok google.golang.org/grpc/benchmark/primitives 0.036s [no tests to run]
? google.golang.org/grpc/benchmark/server [no test files]
? google.golang.org/grpc/benchmark/stats [no test files]
? google.golang.org/grpc/benchmark/worker [no test files]
? google.golang.org/grpc/binarylog/grpc_binarylog_v1 [no test files]
? google.golang.org/grpc/channelz/grpc_channelz_v1 [no test files]
ok google.golang.org/grpc/channelz/service 0.024s
ok google.golang.org/grpc/codes 0.006s
? google.golang.org/grpc/connectivity [no test files]
ok google.golang.org/grpc/credentials 0.014s
ok google.golang.org/grpc/credentials/alts 0.009s
? google.golang.org/grpc/credentials/alts/internal [no test files]
ok google.golang.org/grpc/credentials/alts/internal/authinfo 0.006s
ok google.golang.org/grpc/credentials/alts/internal/conn 0.133s
ok google.golang.org/grpc/credentials/alts/internal/handshaker 0.045s
ok google.golang.org/grpc/credentials/alts/internal/handshaker/service 0.013s
? google.golang.org/grpc/credentials/alts/internal/proto/grpc_gcp [no test files]
? google.golang.org/grpc/credentials/alts/internal/testutil [no test files]
? google.golang.org/grpc/credentials/google [no test files]
? google.golang.org/grpc/credentials/oauth [no test files]
? google.golang.org/grpc/encoding [no test files]
? google.golang.org/grpc/encoding/gzip [no test files]
ok google.golang.org/grpc/encoding/proto 0.075s
? google.golang.org/grpc/examples/helloworld/greeter_client [no test files]
? google.golang.org/grpc/examples/helloworld/greeter_server [no test files]
? google.golang.org/grpc/examples/helloworld/helloworld [no test files]
ok google.golang.org/grpc/examples/helloworld/mock_helloworld 0.011s
? google.golang.org/grpc/examples/oauth/client [no test files]
? google.golang.org/grpc/examples/oauth/server [no test files]
? google.golang.org/grpc/examples/route_guide/client [no test files]
ok google.golang.org/grpc/examples/route_guide/mock_routeguide 0.039s
? google.golang.org/grpc/examples/route_guide/routeguide [no test files]
? google.golang.org/grpc/examples/route_guide/server [no test files]
? google.golang.org/grpc/examples/rpc_errors/client [no test files]
? google.golang.org/grpc/examples/rpc_errors/server [no test files]
ok google.golang.org/grpc/grpclog 0.007s
? google.golang.org/grpc/grpclog/glogger [no test files]
ok google.golang.org/grpc/health 0.005s
? google.golang.org/grpc/health/grpc_health_v1 [no test files]
? google.golang.org/grpc/internal [no test files]
? google.golang.org/grpc/internal/backoff [no test files]
ok google.golang.org/grpc/internal/binarylog 0.006s
ok google.golang.org/grpc/internal/channelz 0.012s
? google.golang.org/grpc/internal/envconfig [no test files]
? google.golang.org/grpc/internal/grpcrand [no test files]
ok google.golang.org/grpc/internal/grpcsync 0.013s
ok google.golang.org/grpc/internal/leakcheck 4.052s
? google.golang.org/grpc/internal/syscall [no test files]
ok google.golang.org/grpc/internal/testutils 0.002s
ok google.golang.org/grpc/internal/transport 81.968s
? google.golang.org/grpc/interop [no test files]
? google.golang.org/grpc/interop/alts/client [no test files]
? google.golang.org/grpc/interop/alts/server [no test files]
? google.golang.org/grpc/interop/client [no test files]
? google.golang.org/grpc/interop/fake_grpclb [no test files]
? google.golang.org/grpc/interop/grpc_testing [no test files]
? google.golang.org/grpc/interop/http2 [no test files]
? google.golang.org/grpc/interop/server [no test files]
? google.golang.org/grpc/keepalive [no test files]
ok google.golang.org/grpc/metadata 0.006s
ok google.golang.org/grpc/naming 0.159s
? google.golang.org/grpc/peer [no test files]
ok google.golang.org/grpc/reflection 0.016s
? google.golang.org/grpc/reflection/grpc_reflection_v1alpha [no test files]
? google.golang.org/grpc/reflection/grpc_testing [no test files]
? google.golang.org/grpc/reflection/grpc_testingv3 [no test files]
? google.golang.org/grpc/resolver [no test files]
ok google.golang.org/grpc/resolver/dns 1.370s
? google.golang.org/grpc/resolver/manual [no test files]
? google.golang.org/grpc/resolver/passthrough [no test files]
ok google.golang.org/grpc/stats 0.104s
? google.golang.org/grpc/stats/grpc_testing [no test files]
ok google.golang.org/grpc/status 0.017s
? google.golang.org/grpc/stress/client [no test files]
? google.golang.org/grpc/stress/grpc_testing [no test files]
? google.golang.org/grpc/stress/metrics_client [no test files]
? google.golang.org/grpc/tap [no test files]
ok google.golang.org/grpc/test 33.866s
ok google.golang.org/grpc/test/bufconn 0.005s
? google.golang.org/grpc/test/codec_perf [no test files]
? google.golang.org/grpc/test/go_vet [no test files]
? google.golang.org/grpc/test/grpc_testing [no test files]
```
Aaron Gable
dependabot[bot]
Jacob Hoffman-Andrews