chore(deps): upgrade golangci-lint from v2.10.1 to v2.11.4 (#821)

## Summary
- Bump golangci-lint from v2.10.1 to v2.11.4
- Remove unused `//nolint:revive` directive on metrics package declaration (detected by stricter nolintlint in new version)

## Changes between v2.10.1 and v2.11.4
- **v2.11.0** — Multiple linter dependency upgrades, Go 1.26 support
- **v2.11.2** — Bug fix for `fmt` with path
- **v2.11.3** — gosec update
- **v2.11.4** — Dependency updates (sqlclosecheck, noctx, etc.)

No breaking changes.

Reviewed-on: https://gitea.com/gitea/act_runner/pulls/821
Co-authored-by: Bo-Yi Wu <appleboy.tw@gmail.com>
Co-committed-by: Bo-Yi Wu <appleboy.tw@gmail.com>

Makefile

@@ -20,7 +20,7 @@ DOCKER_TAG ?= nightly
 DOCKER_REF := $(DOCKER_IMAGE):$(DOCKER_TAG)
 DOCKER_ROOTLESS_REF := $(DOCKER_IMAGE):$(DOCKER_TAG)-dind-rootless
 
-GOLANGCI_LINT_PACKAGE ?= github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.10.1
+GOLANGCI_LINT_PACKAGE ?= github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.11.4
 GOVULNCHECK_PACKAGE ?= golang.org/x/vuln/cmd/govulncheck@v1
 
 ifneq ($(shell uname), Darwin)

internal/pkg/metrics/server.go

@@ -1,7 +1,7 @@
 // Copyright 2026 The Gitea Authors. All rights reserved.
 // SPDX-License-Identifier: MIT
 
-package metrics //nolint:revive // "metrics" is the conventional package name for Prometheus instrumentation; runtime/metrics stdlib is not used here.
+package metrics
 
 import (
 	"context"