chore(ci): Lint only pkg/ code, and lint all Go modules (#88940)

Signed-off-by: Dave Henderson <dave.henderson@grafana.com>

.github/workflows/go_lint.yml

@@ -26,7 +26,8 @@ jobs:
         uses: golangci/golangci-lint-action@v5
         with:
           version: v1.59.0
-          args: --config .golangci.toml --max-same-issues=0 --max-issues-per-linter=0 --verbose
+          args: |
+            --config .golangci.toml --max-same-issues=0 --max-issues-per-linter=0 --verbose ./pkg/... ./pkg/apimachinery/... ./pkg/apiserver/... ./pkg/build/wire/... ./pkg/promlib/... ./pkg/util/xorm/...
           only-new-issues: true
           skip-cache: true
           install-mode: binary