Build/Test Tools: Run upgrade tests against 6.7.

Now that 6.7 is generally available, the upgrade tests no longer need to be run against a pre-release version.

See #62221.

git-svn-id: https://develop.svn.wordpress.org/trunk@59397 602fd350-edb4-49c9-b593-d223f7449a82

.github/workflows/upgrade-testing.yml

@@ -46,7 +46,7 @@ jobs:
         php: [ '8.0', '8.1', '8.2', '8.3', '8.4' ]
         db-type: [ 'mysql' ]
         db-version: [ '5.7', '8.0', '8.4' ]
-        wp: [ '6.0', '6.1', '6.2', '6.3', '6.4', '6.5', '6.6', '6.7-RC1' ]
+        wp: [ '6.0', '6.1', '6.2', '6.3', '6.4', '6.5', '6.6', '6.7' ]
         multisite: [ false, true ]
 
     with:
@@ -72,7 +72,7 @@ jobs:
         php: [ '7.2', '7.3', '7.4' ]
         db-type: [ 'mysql' ]
         db-version: [ '5.7', '8.0', '8.4' ]
-        wp: [ '6.0', '6.1', '6.2', '6.3', '6.4', '6.5', '6.6', '6.7-RC1' ]
+        wp: [ '6.0', '6.1', '6.2', '6.3', '6.4', '6.5', '6.6', '6.7' ]
         multisite: [ false, true ]
 
         exclude: