Attempt to update CI to MySQL 8.4

<https://php.watch/articles/fix-php-mysql-84-mysql_native_password-not-loaded>.

.github/workflows/push.yml

@@ -44,7 +44,7 @@ jobs:
     if: github.repository == 'php/php-src' || github.event_name == 'pull_request'
     services:
       mysql:
-        image: mysql:8.3
+        image: mysql:8.4
         ports:
           - 3306:3306
         env:
@@ -85,6 +85,9 @@ jobs:
         uses: actions/checkout@v4
       - name: apt
         uses: ./.github/actions/apt-x64
+      - name: MySQL
+        run: |
+          sudo mysql -e "SELECT user, host, plugin from mysql.user WHERE plugin='mysql_native_password';"
       - name: System info
         run: |
           echo "::group::Show host CPU info"
@@ -137,7 +140,7 @@ jobs:
         if: ${{ !matrix.asan }}
         uses: ./.github/actions/verify-generated-files
   LINUX_X32:
-    if: github.repository == 'php/php-src' || github.event_name == 'pull_request'
+    if: false
     name: LINUX_X32_DEBUG_ZTS
     runs-on: ubuntu-latest
     timeout-minutes: 50
@@ -193,7 +196,7 @@ jobs:
             -d zend_extension=opcache.so
             -d opcache.enable_cli=1
   MACOS_DEBUG_NTS:
-    if: github.repository == 'php/php-src' || github.event_name == 'pull_request'
+    if: false
     strategy:
       fail-fast: false
       matrix:
@@ -234,7 +237,7 @@ jobs:
       - name: Verify generated files are up to date
         uses: ./.github/actions/verify-generated-files
   WINDOWS:
-    if: github.repository == 'php/php-src' || github.event_name == 'pull_request'
+    if: false
     name: WINDOWS_X64_ZTS
     runs-on: windows-2022
     timeout-minutes: 50
@@ -369,6 +372,7 @@ jobs:
           retention-days: 30
   FREEBSD:
     name: FREEBSD
+    if: false
     runs-on: ubuntu-latest
     steps:
       - name: git checkout