Bump the protolint version to 0.50.5

The old versio doesn't seem to be available any more, it gives a 404.

Signed-off-by: Leandro Lucarella <[email protected]>

Author: llucax

.github/workflows/ci.yaml

@@ -43,7 +43,7 @@ jobs:
           filter_mode: nofilter
           github_token: ${{ secrets.github_token }}
           protolint_flags: proto/
-          protolint_version: "0.45.0"
+          protolint_version: "0.50.5"
           reporter: github-check
 
   nox: