upgraded to v1.5.0 of generate-sitemap

Author: cicirello

.github/workflows/api-webpage-sitemap.yml

@@ -16,7 +16,7 @@ jobs:
         fetch-depth: 0 
     - name: Generate the sitemap
       id: sitemap
-      uses: cicirello/generate-sitemap@development
+      uses: cicirello/generate-sitemap@v1.5.0
       with:
         base-url-path: https://jpt.cicirello.org/
         path-to-root: docs
@@ -29,7 +29,7 @@ jobs:
       uses: peter-evans/[email protected]
       with:
         title: "Automated sitemap update"
-        body: >  
+        body: > 
           Sitemap was updated by [generate-sitemap](https://github.com/cicirello/generate-sitemap) 
           GitHub action. Automated pull-request generated by 
           [create-pull-request](https://github.com/peter-evans/create-pull-request) GitHub action.