Update main.yml

Author: rahlk

.github/workflows/main.yml

@@ -31,7 +31,7 @@ jobs:
 
       - name: Determine new tag
         id: newtag
-        run: echo "::set-output name=tag::$(date +'%Y%m%d%H%M%S')"
+        run: echo "::set-output name=tag::$(date +'%Y%m%dT%H%M%S')"
 
       - name: Create Git Tag
         run: git tag ${{ steps.newtag.outputs.tag }} && git push origin ${{ steps.newtag.outputs.tag }}