[actions] update workflows

.github/workflows/release.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v2-beta
+      - uses: actions/setup-node@v2
         with:
           node-version: "14"
       - run: npm install

.github/workflows/toc.yml

@@ -17,7 +17,7 @@ jobs:
 
     # pulls all tags (needed for lerna / semantic release to correctly version)
     - run: git fetch --depth=1 origin +refs/tags/*:refs/tags/*
-    - uses: actions/setup-node@v1
+    - uses: actions/setup-node@v2
       with:
         node-version: '12.x'
     - run: npm install