Update to new github actions flow

.github/workflows/Publish.yml

@@ -1,22 +1,45 @@
 name: Publish
 
 on:
-  create:
+  release:
+    types: [published]
 
 jobs:
   publish:
     name: Publish
+
     runs-on: ubuntu-latest
+
     steps:
       - uses: actions/checkout@master
+
       - name: Setup Node.js
         uses: actions/setup-node@v1
         with:
           node-version: 12.x
-          registry-url: https://registry.npmjs.org/
+          registry-url: "https://registry.npmjs.org/"
+
       - name: Install
         run: yarn --frozen-lockfile --non-interactive
+
+      - name: Setup git and yarn
+        run: |
+          git config user.email "admin@minidigger.me"
+          git config user.name "MiniDigger"
+          yarn config set version-git-tag false
+
+      - name: Bump version
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        run: |
+          version=$(echo "$GITHUB_REF" | sed "s/refs\/tags\/v//")
+          echo "Bumping version to $version"
+          yarn version --new-version $version
+          git add package.json
+          git commit -m "Bump version to $version"
+          git push "https://$GITHUB_ACTOR:$GITHUB_TOKEN@github.com/$GITHUB_REPOSITORY" HEAD:master
+
       - name: Publish
         run: yarn publish
         env:
-          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}

package.json

@@ -15,9 +15,6 @@
     "bugs": {
         "url": "https://github.com/MiniDigger/thelounge-plugin-giphy/issues"
     },
-    "scripts": {
-        "postversion": "git push --tags"
-    },
     "thelounge": {
         "name": "Giphy",
         "type": "plugin"