chore: add installation step for latest alpha version of podverse-notifications in publish-alpha workflow

Author: mitchdowney

.github/workflows/publish-alpha.yml

@@ -27,6 +27,10 @@ jobs:
         run: |
           npm i podverse-external-services@alpha --save
 
+      - name: Install podverse-notifications latest alpha version
+        run: |
+          npm i podverse-notifications@alpha --save
+
       - name: Install podverse-orm latest alpha version
         run: |
           npm i podverse-orm@alpha --save