Remove default from php-version input and add file input from shivamm…

…athur#690

action.yml

@@ -6,25 +6,20 @@ branding:
   icon: 'play-circle'
 inputs:
   php-version:
-    description: 'Setup PHP version.'
-    default: '8.2'
-    required: true
+    description: 'Setup PHP version. Reads from .php-version if unset.'
+  php-version-file:
+    description: 'File containing the PHP version to use. Defaults to .php-version if unset.'
   extensions:
     description: 'Setup PHP extensions.'
-    required: false
   ini-file:
     description: 'Set base ini file.'
     default: 'production'
-    required: false
   ini-values:
     description: 'Add values to php.ini.'
-    required: false
   coverage: 
     description: 'Setup code coverage driver.'
-    required: false
   tools:
     description: 'Setup popular tools globally.'
-    required: false
 outputs:
   php-version:
     description: 'PHP version in semver format'