chore(ci): handle deprecation of Go linter format

Deals with error that I had noticed a couple of times in CI:

```
level=warning msg="[config_reader] The output format `github-actions` is deprecated, please use `colored-line-number`"
```

Signed-off-by: Hidde Beydals <hidde@hhh.computer>

.github/workflows/ci.yaml

@@ -94,7 +94,7 @@ jobs:
       run: git config --global --add safe.directory '*'
     - name: Run linter
       env:
-        GO_LINT_ERROR_FORMAT: github-actions
+        GO_LINT_ERROR_FORMAT: colored-line-number
       run: make lint-go
 
   lint-charts: