CI version bump, update golangci-lint to v2

.github/workflows/checks.yml

@@ -11,14 +11,16 @@ jobs:
     name: Test
     runs-on: ubuntu-latest
     steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v5
+
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v6
         with:
-          go-version: ^1.21
-        id: go
+          go-version: ^1.24
 
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
+      - name: Download dependencies
+        run: go mod download
 
       - name: Run unit tests and generate the coverage report
         run: make test-race
@@ -27,26 +29,22 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v5
+
       - name: Set up Go
-        uses: actions/setup-go@v3
+        uses: actions/setup-go@v6
         with:
-          go-version: ^1.21
-        id: go
-
-      - name: Check out code into the Go module directory
-        uses: actions/checkout@v2
+          go-version: ^1.24
 
       - name: Install gofumpt
         run: go install mvdan.cc/gofumpt@v0.4.0
 
       - name: Install staticcheck
-        run: go install honnef.co/go/tools/cmd/staticcheck@v0.5.1
+        run: go install honnef.co/go/tools/cmd/staticcheck@2025.1.1
 
       - name: Install golangci-lint
-        run: go install github.com/golangci/golangci-lint/cmd/golangci-lint@v1.61.0
-
-      - name: Install NilAway
-        run: go install go.uber.org/nilaway/cmd/nilaway@v0.0.0-20240821220108-c91e71c080b7
+        run: go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.1.2
 
       - name: Lint
         run: make lint

.golangci.yaml

@@ -1,16 +1,15 @@
+version: "2"
 linters:
   enable-all: true
   disable:
     - cyclop
     - forbidigo
     - funlen
-    - gci
     - gochecknoglobals
     - gochecknoinits
     - gocritic
     - godot
     - godox
-    - gomnd
     - mnd
     - lll
     - nestif
@@ -40,8 +39,6 @@ linters:
     #
     # Disabled because deprecated:
     #
-    - execinquery
-    - exportloopref
 
 linters-settings:
   #
@@ -89,3 +86,19 @@ linters-settings:
       - 'MockBeaconClient'
       - 'RelayAPI'
       - 'Webserver'
+
+formatters:
+  enable:
+    - gci
+    - gofmt
+    - gofumpt
+    - goimports
+  settings:
+    gofumpt:
+      extra-rules: true
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

cmd/https-client/main.go

@@ -68,7 +68,7 @@ func runCli(cCtx *cli.Context) error {
 		log.Error("http request error", "err", err)
 		return err
 	}
-	defer resp.Body.Close()
+	defer resp.Body.Close() //nolint:errcheck
 
 	respBody, err := io.ReadAll(resp.Body)
 	if err != nil {