BUGFIX: Fixed CI files according to Spryk's CI file version

Author: pushokwhite

.github/workflows/ci.yml

@@ -10,10 +10,10 @@ on:
 jobs:
     validation:
         name: Validation
-        runs-on: ubuntu-20.04
+        runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v3
 
             - name: Setup PHP
               uses: shivammathur/setup-php@v2
@@ -33,10 +33,10 @@ jobs:
 
     lowest:
         name: Prefer Lowest
-        runs-on: ubuntu-20.04
+        runs-on: ubuntu-latest
 
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v3
 
             - name: Setup PHP
               uses: shivammathur/setup-php@v2