Add defaults and conditional to stop step from running

action.yml

@@ -6,10 +6,12 @@ inputs:
     description: |
       Body of pull request if inside a pull request
     required: false
+    default: ""
   pr_number:
     description: |
       Pull request number
     required: false
+    default: ""
   owner:
     description: |
       Repository Owning Organisation
@@ -35,6 +37,7 @@ runs:
         echo ${{ inputs.pr_body == '' && inputs.pr_number == ''}}
 
     - uses: actions/github-script@v7
+      if: ${{ inputs.pr_body == '' && inputs.pr_number == '' }}
       id: get_pr_data
       with:
         script: |
@@ -50,7 +53,7 @@ runs:
     - uses: fregante/setup-git-user@v2
 
     - name: Determine new tag version
-      if: ${{ inputs.pr_body == '' && inputs.pr_number == ''}}
+      if: ${{ inputs.pr_body == '' && inputs.pr_number == '' }}
       shell: sh
       id: determine_next_tag
       # User controlled input needs to be santitised beforehand e.g., by adding an