Fixed workflow when PR

.github/workflows/linter.yml

@@ -1,6 +1,7 @@
 name: Check for Type Errors
 
 on:
+  pull_request:
   push: # (or pull requests)
     paths:
       - '.github/workflows/**'

.github/workflows/php-cs-fixer.yml

@@ -1,6 +1,7 @@
 name: Check & fix styling
 
 on:
+  pull_request:
   push: # (or pull requests)
     paths:
       - '.github/workflows/**'

.github/workflows/phpunit.yaml

@@ -1,6 +1,9 @@
 name: Testing Code with PHPUnit
 
 on:
+  schedule:
+    - cron: '0 0 * * *'
+  pull_request:
   push: # (or pull requests)
     paths:
       - '.github/workflows/**'

.github/workflows/spellcheck.yml

@@ -1,6 +1,7 @@
 name: Spell check
 
 on:
+  pull_request:
   push: # (or pull requests)
     paths:
       - '.github/workflows/**'