fix: github server url ref (#412)

Author: rdhar

action.yml

@@ -225,15 +225,15 @@ runs:
         openssl enc -aes-256-ctr -pbkdf2 -salt -in "$path" -out "$path.encrypted" -pass file:"$temp_file"
         mv "$path.encrypted" "$path"
 
-    - if: ${{ inputs.command == 'plan' && env.GITHUB_SERVER_URL == 'https://github.com' }}
+    - if: ${{ inputs.command == 'plan' && github.server_url == 'https://github.com' }}
       id: upload
       uses: actions/upload-artifact@65c4c4a1ddee5b72f698fdd19549f0f0fb45cf08 # v4.6.0
       with:
         name: ${{ steps.identifier.outputs.name }}
         path: ${{ format('{0}{1}tfplan', inputs.arg-chdir || inputs.working-directory, (inputs.arg-chdir || inputs.working-directory) && '/' || '') }}
         overwrite: true
 
-    - if: ${{ inputs.command == 'plan' && env.GITHUB_SERVER_URL != 'https://github.com' }}
+    - if: ${{ inputs.command == 'plan' && github.server_url != 'https://github.com' }}
       id: upload-v3
       uses: actions/upload-artifact@c24449f33cd45d4826c6702db7e49f7cdb9b551d # v3.2.1-node20
       with: