fix: commit does not have author in copr

.copr/copr_script.sh

@@ -20,7 +20,7 @@ rm -rf "artalk-${tag#v}-vendored.tar.gz"
 git stash
 cp changelog artalk.spec ../
 git add ../changelog ../artalk.spec
-git commit -m "for rpmautospec [skip changelog]"
+git commit -m "for rpmautospec [skip changelog]" --author "artalk <[email protected]>"
 rpmautospec process-distgit ../artalk.spec artalk.spec
 if git stash list | grep -q 'stash@'; then
   git stash pop