fix: exclude "github-actions" from comments

If that bot wants to tell us something, it will also block the PR
properly. At workplace, this bot just informs about test coverage and
other stuff, which isn't interesting when determining if the PR author
needs to pay attention to incoming information.

internal/github/github.go

@@ -235,6 +235,9 @@ func QueryGithub(token string, username string, logger *slog.Logger) ([]types.Vi
 
 		lastPrCommenter := ""
 		for _, c := range pr.Comments.Edges {
+			if c.Node.Author.Login == "github-actions" {
+				continue
+			}
 			lastPrCommenter = c.Node.Author.Login
 		}