Update tests.yml bumping golangci-lint

Fixes the issues we observe with go 1.21. 

Reference: golangci/golangci-lint#3933

Signed-off-by: Radoslav Dimitrov <radoslav@stacklok.com>

.github/workflows/tests.yml

@@ -65,7 +65,7 @@ jobs:
       - name: golangci-lint
         uses: golangci/golangci-lint-action@3a919529898de77ec3da873e3063ca4b10e7f5cc
         with:
-          version: v1.51 # has to be pinned and thus manually updated due to https://github.com/golangci/golangci-lint-action/blob/6a290f7d5d488e1e423b0b37fe802c822ca2c08c/README.md?plain=1#L108
+          version: v1.55.2 # has to be pinned and thus manually updated due to https://github.com/golangci/golangci-lint-action/blob/6a290f7d5d488e1e423b0b37fe802c822ca2c08c/README.md?plain=1#L108
           args: --timeout 5m --verbose
       - name: govulncheck
         uses: golang/govulncheck-action@v1