Bump reviewdog golangci-lint action major version

This is a necessary precursor to bumping the Go version from 1.21 to
1.22, which will be done in separate PR.

Author: johnboyes

.github/workflows/reviewdog.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@v4
-      - uses: reviewdog/action-golangci-lint@v1
+      - uses: reviewdog/action-golangci-lint@v2
         with:
           github_token: ${{ secrets.github_token }}
           golangci_lint_flags: "-c .golangci.yml"