[Internal] Bump golangci-lint to v2

* Update golangci-lint v1 -> v2
* Update Go verson v1.23 -> v1.25 (required by the latest
  golangci-lint version)
* Migrate config
* Fix reported issues

Author: un-def

.github/workflows/build-artifacts.yml

@@ -116,7 +116,7 @@ jobs:
       - name: Run golangci-lint
         uses: golangci/golangci-lint-action@v6
         with:
-          version: v1.62.0  # Should match .pre-commit-config.yaml
+          version: v2.6.2  # Should match .pre-commit-config.yaml
           args: --timeout=20m
           working-directory: runner
       - name: Test

.pre-commit-config.yaml

@@ -7,11 +7,11 @@ repos:
         args: ['--fix']
       - id: ruff-format
   - repo: https://github.com/golangci/golangci-lint
-    rev: v1.62.0  # Should match .github/workflows/build-artifacts.yml
+    rev: v2.6.2  # Should match .github/workflows/build-artifacts.yml
     hooks:
       - id: golangci-lint-full
-        language_version: 1.23.8  # Should match runner/go.mod
-        entry: bash -c 'cd runner && golangci-lint run'
+        language_version: 1.25.0  # Should match runner/go.mod
+        entry: bash -c 'cd runner && golangci-lint run --fix'
         stages: [manual]
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v5.0.0