chore: Update golangci/golangci-lint-action digest to 2226d7c

Author: grafanarenovatebot[bot]

.github/workflows/lint.yaml

@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@818ec4d51a1feacefc42ff1b3ec25d4962690f39 # v6
+        uses: golangci/golangci-lint-action@2226d7cb06a077cd73e56eedd38eecad18e5d837 # v6
         with:
           only-new-issues: true
           args: --timeout=5m # 1m is not enough, experimentally.