ci(nightly): explicitly remove previous nightly release

I expected the action that creates the nightly release to also remove
the old release. It has options for keeping old releases etc but
appararently it's none of its business. Thus, we're now explicitly
removing the 'nightly' tag before re-creating it.

.github/workflows/nightly-release.yml

@@ -1,11 +1,11 @@
 name: Deploy Nightly
 
 on:
+  schedule:
+    - cron: "0 0 * * *" # Run at 00:00 UTC every day
   push:
     branches:
       - main
-  schedule:
-    - cron: '0 0 * * *' # Run every day at 0 AM UTC
 
 jobs:
   nightly:
@@ -13,15 +13,21 @@ jobs:
     runs-on: ubuntu-latest
     env:
       GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      TAG_NAME: nightly
     steps:
       - name: Get current date
         id: get_date
         run: echo "::set-output name=date::$(date +'%Y-%m-%d')"
-      - name: Create nightly release
+      - name: Remove old nightly release
+        uses: dev-drprasad/delete-tag-and-release@v0.2.0
+        with:
+          delete_release: true
+          tag_name: ${{ env.TAG_NAME }}
+      - name: Create new nightly release
         id: create_release
         uses: viperproject/create-nightly-release@v1
         with:
-          tag_name: nightly
+          tag_name: ${{ env.TAG_NAME }}
           release_name: Nightly - ${{ steps.get_date.outputs.date }}
           keep_num: 0
           keep_tags: false