Revert "Try PHP8"

This reverts commit 23fa7b7

Author: canvural

.github/workflows/tests.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [7.4, 8.0]
+        php: [7.4]
         dependencies: [locked]
 
     steps:
@@ -69,7 +69,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [7.4, 8.0]
+        php: [7.4]
 
         dependencies: [locked]
 
@@ -127,7 +127,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [7.4, 8.0]
+        php: [7.4]
 
         dependencies:
           - "lowest"
@@ -178,7 +178,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [7.4, 8.0]
+        php: [7.4]
 
         dependencies:
           - "locked"
@@ -232,7 +232,7 @@ jobs:
 
     strategy:
       matrix:
-        php: [7.4, 8.0]
+        php: [7.4]
 
         dependencies:
           - "locked"