Only use 7.4

Author: tijmenbruggeman

.github/workflows/unit-tests.yml

@@ -14,7 +14,7 @@ jobs:
     timeout-minutes: 10
     strategy:
       matrix:
-        php: ['7.4', '8.1']
+        php: ['7.4']
     steps:
       - name: Checkout Code
         uses: actions/checkout@v3
@@ -33,7 +33,7 @@ jobs:
     timeout-minutes: 10
     strategy:
       matrix:
-        php: ['7.4', '8.1']
+        php: ['7.4']
     steps:
       - name: Checkout Code
         uses: actions/checkout@v3