Specify artifact action version.

Author: gibbs

.github/workflows/deploy.yml

@@ -1,6 +1,7 @@
 name: Deploy
 
 on:
+  workflow_dispatch:
   workflow_run:
     workflows: ['Tests']
     types:
@@ -37,7 +38,7 @@ jobs:
             --exclude=.github \
             .
       - name: Upload artefact
-        uses: actions/upload-artifact@main
+        uses: actions/upload-artifact@v3.1.3
         with:
           name: github-pages
           path: ${{ runner.temp }}/build.tar