Fix Flet wheels publishing on tag builds

Author: FeodorFitsner

.appveyor.yml

@@ -431,7 +431,7 @@ for:
 
       # publish package
       - sh: |
-          if [[ "$APPVEYOR_REPO_BRANCH" == "main" && "$APPVEYOR_PULL_REQUEST_NUMBER" == "" ]]; then
+          if [[ ("$APPVEYOR_REPO_BRANCH" == "main" || "$APPVEYOR_REPO_TAG_NAME" != "") && "$APPVEYOR_PULL_REQUEST_NUMBER" == "" ]]; then
               twine upload dist/*
           fi