patch 8.2.1321: GitHub CI also runs on tag push

Problem:    GitHub CI also runs on tag push.
Solution:   Skip CI on push. (Ken Takata, closes #6571)

.github/workflows/ci-windows.yaml

@@ -2,6 +2,8 @@ name: GitHub CI
 
 on:
   push:
+    branches:
+      - '*'
   pull_request:
 
 env:

src/version.c

@@ -754,6 +754,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1321,
 /**/
     1320,
 /**/