Update golangci configuration to work with latest linter versions

* Follow golangci-lint config verify errors and fix according to the latest https://golangci-lint.run/usage/configuration/ and https://golangci-lint.run/usage/linters

* It should proactively fix the associated pipeline failures

Signed-off-by: Yury Tsarev <yury@upbound.io>

.golangci.yml

@@ -1,12 +1,10 @@
 run:
   timeout: 10m
 
-  skip-files:
-  - "zz_generated\\..+\\.go$"
-
 output:
   # colored-line-number|line-number|json|tab|checkstyle|code-climate, default is "colored-line-number"
-  format: colored-line-number
+  formats:
+    - format: colored-line-number
 
 linters-settings:
   errcheck:
@@ -18,14 +16,15 @@ linters-settings:
     # default is false: such cases aren't reported by default.
     check-blank: false
 
-    # [deprecated] comma-separated list of pairs of the form pkg:regex
-    # the regex is used to ignore names within pkg. (default "fmt:.*").
-    # see https://github.com/kisielk/errcheck#the-deprecated-method for details
-    ignore: fmt:.*,io/ioutil:^Read.*
+    # List of functions to exclude from checking, where each entry is a single function to exclude.
+    # See https://github.com/kisielk/errcheck#excluding-functions for details.
+    exclude-functions:
+      - io/ioutil.ReadFile
 
   govet:
     # report about shadowed variables
-    check-shadowing: false
+    disable:
+      - shadow
 
   gofmt:
     # simplify code: gofmt with `-s` option, true by default
@@ -45,10 +44,6 @@ linters-settings:
     # minimal code complexity to report, 30 by default (but we recommend 10-20)
     min-complexity: 10
 
-  maligned:
-    # print struct with more effective memory layout or not, false by default
-    suggest-new: true
-
   dupl:
     # tokens count to trigger issue, 150 by default
     threshold: 100
@@ -116,7 +111,7 @@ linters:
     - misspell
     - nakedret
     - nolintlint
-  
+
   disable:
     # These linters are all deprecated as of golangci-lint v1.49.0. We disable
     # them explicitly to avoid the linter logging deprecation warnings.
@@ -135,6 +130,9 @@ linters:
 issues:
   # Excluding configuration per-path and per-linter
   exclude-rules:
+    - path: "zz_generated\\..+\\.go$"
+      linters: ["all"]
+
     # Exclude some linters from running on tests files.
     - path: _test(ing)?\.go
       linters:
@@ -181,7 +179,7 @@ issues:
       linters:
       - gosec
       - gas
-    
+
     # Some k8s dependencies do not have JSON tags on all fields in structs.
     - path: k8s.io/
       linters:
@@ -202,7 +200,7 @@ issues:
   new: false
 
   # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
-  max-per-linter: 0
+  max-issues-per-linter: 0
 
   # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
   max-same-issues: 0