ci: revert to node 16.x, fix version wrapped in quotes

.github/workflows/nightly.yml

@@ -15,10 +15,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Setup Node.js v18.x
+    - name: Setup Node.js v16.x
       uses: actions/setup-node@v2
       with:
-        node-version: 18.x
+        node-version: 16.x
 
     - name: Pack base asar
       run: |
@@ -77,10 +77,10 @@ jobs:
     steps:
     - uses: actions/checkout@v2
 
-    - name: Setup Node.js v18.x
+    - name: Setup Node.js v16.x
       uses: actions/setup-node@v2
       with:
-        node-version: 18.x
+        node-version: 16.x
 
     - name: Retrieve artifact
       uses: actions/download-artifact@v2
@@ -153,7 +153,7 @@ jobs:
         gh release create ${{ env.VERSION }} -t "$(echo "${{ env.VERSION }}" | sed 's/.*/\u&/')" -n "$(git rev-parse HEAD | cut -c 1-7) | $(git log -1 --pretty=%B)" ${{ env.FILES }}
       env:
         GITHUB_TOKEN: '${{ secrets.GITHUB_TOKEN }}'
-        VERSION: \"$(strings app.asar | grep -oP "oaVersion='.*?-" | grep -oP "(?<=').*?(?=-)")\"
+        VERSION: '$(strings app.asar | grep -oP "oaVersion='.*?-" | grep -oP "(?<=').*?(?=-)")''
         FILES: app.asar
 
   # debug-linux:
@@ -195,10 +195,10 @@ jobs:
   #   steps:
   #   - uses: actions/checkout@v2
 
-  #   - name: Setup Node.js v18.x
+  #   - name: Setup Node.js v16.x
   #     uses: actions/setup-node@v2
   #     with:
-  #       node-version: 18.x
+  #       node-version: 16.x
 
   #   - name: Retrieve artifact
   #     uses: actions/download-artifact@v2