[WIP] v13 only ci

Author: achimfritz

.github/workflows/ci.yml

@@ -13,19 +13,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php: [ '7.4', '8.0', '8.1' ]
-        TYPO3: [ '11' ]
-        include:
-          - TYPO3: '12'
-            php: '8.1'
-          - TYPO3: '12'
-            php: '8.2'
-          - TYPO3: '12'
-            php: '8.3'
-          - TYPO3: '13'
-            php: '8.2'
-          - TYPO3: '13'
-            php: '8.3'
+        php: [ '8.3' ]
+        TYPO3: [ '13' ]
     steps:
       - name: Checkout
         uses: actions/checkout@v4