Build/Test Tools: Revert [60324] while memory exhaustion issues in the GitHub Actions workflows are investigated.

See #63170

git-svn-id: https://develop.svn.wordpress.org/trunk@60326 602fd350-edb4-49c9-b593-d223f7449a82

Author: johnbillion

.github/workflows/reusable-performance-test-v2.yml

@@ -19,7 +19,7 @@ on:
         description: 'The version being used for baseline measurements.'
         required: false
         type: 'string'
-        default: '6.8.0'
+        default: '6.7.0'
       TARGET_SHA:
         description: 'SHA hash of the target commit used for "before" measurements.'
         required: true

.github/workflows/reusable-performance.yml

@@ -15,7 +15,7 @@ on:
         description: 'The version being used for baseline measurements.'
         required: false
         type: 'string'
-        default: '6.8.0'
+        default: '6.7.0'
       php-version:
         description: 'The PHP version to use.'
         required: false