fix(dependencies): check if repo is clean before committing

.github/workflows/dependencies/updater.py

@@ -390,6 +390,12 @@ class Git:
         clean_env["GIT_CONFIG_GLOBAL"] = "/dev/null"
         clean_env["GIT_CONFIG_NOSYSTEM"] = "1"
 
+        # check if repo is clean (clean => no error, no commit)
+        try:
+            CommandRunner.run_or_fail(
+                ["git", "diff", "--exit-code"], stage="CheckRepoClean", env=clean_env
+            )
+        except CommandRunner.Exception:
             # Commit with settings above
             CommandRunner.run_or_fail(
                 [