Move release information to environment variables (#773)

Author: Eeems

.github/workflows/stable.yml

@@ -29,9 +29,11 @@ jobs:
                 GITHUB_TOKEN: ${{ secrets.RELEASE_TOKEN }}
             - name: Create Github Release
               continue-on-error: true
-              run: hub release create -t ${{ github.sha }} -m "${{ github.event.commits[0].message }}" $(date +%G-W%V-%u)
+              run: hub release create -t $SHA -m $MESSAGE $(date +%G-W%V-%u)
               env:
+                SHA: ${{ github.sha }}
                 GITHUB_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+                MESSAGE: ${{ github.event.commits[0].message }}
             - name: Send notification to Discord
               continue-on-error: true
               uses: ./.github/actions/discord-send