chore(action.yml): format action.yml to mach new inputs

action.yml

@@ -4,32 +4,26 @@ author: 'Bryan Killian <me@trilom.org>'
 inputs:
   githubRepo:
     description: 'The github repository you want to compare changes from, defaults to the github.repository.'
-    default: ${{ format('{0}{1}', github.repository, '') }}
-    required: true
+    required: false
   githubToken:
     description: 'The github action token will be used by default, if you want to use something different than you can pass it in here.'
     default: ${{ github.token }}
     required: true
   pushBefore:
     description: 'Pass in a specific sha to compare to as a before, required if using pushAfter. (push BASE payload after github.payload.before)'
-    default: ${{ format('{0}{1}', github.payload.before, '') }}
     required: false
   pushAfter:
     description: 'Pass in a specific sha to compare to as an after, required if using pushBefore. (push HEAD payload after github.payload.after)'
-    default: ${{ format('{0}{1}', github.payload.after, '') }}
     required: false
   prNumber:
     description: 'Pass in a specific PR number to get file changes from.'
-    default: ${{ format('{0}{1}', github.event.pull_request.number, '') }}
     required: false
   output:
     description: 'Choose between json (default), or custom delimiter by passing a string, for example '','' for csv variable output'
-    required: true
-    default: json
+    required: false
   fileOutput:
     description: 'Choose between json (default), or custom delimiter by passing a string, for example '','' for csv file output.  If you set as json the file output will be suffixed with .json, if you select '','' then the output will be .csv, else .txt will be the output.'
-    required: true
-    default: json
+    required: false
 outputs:
   files:
     description: 'The names all new, updated, and deleted files'