- Copy
https://pkg.go.dev/github.com/letsencrypt/pebble/v2/cmd/pebble-challtestsrv
to `test/chall-test-srv`
- Rename pebble-challtestsrv to chall-test-srv, consistent with other
test server naming in Boulder
- Replace Dockerfile go install with Makefile compilation of
`chall-test-srv`
- Run chall-test-srv from `./bin/chall-test-srv`
- Bump `github.com/letsencrypt/challtestsrv` from `v1.2.1` to `v1.3.2`
in go.mod
- Update boulder-ci GitHub workflow to use `go1.24.1_2025-04-02`
Part of #7963
Samantha Frank