Set base for golanci-lint update PR

Signed-off-by: Lennart Jern <[email protected]>

Author: lentzi90

.github/workflows/update-golangci-lint.yaml

@@ -48,6 +48,7 @@ jobs:
             This PR was generated by GH workflow `update-golangci-lint` and
             updates golangci-lint to version v${{ steps.get_version.outputs.latest_version }}.
           branch: update-golangci-lint-${{ steps.get_version.outputs.latest_version }}
+          base: main
           labels: "area/dependency"
           add-paths: |
             - hack/tools/Makefile