Update setup-node to v2 (#325)

My guess is that this will bump the default version of node as well --
it's 10 on v1.

.github/workflows/ci.yml

@@ -14,7 +14,7 @@ jobs:
         node: [ '12', '14' ]
     steps:
     - uses: actions/checkout@v2
-    - uses: actions/setup-node@v1
+    - uses: actions/setup-node@v2
       with:
         node-version: ${{ matrix.node }}
     - name: install

.github/workflows/deploy.yml

@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         ref: ${{ github.event.inputs.checkout || 'master' }}
-    - uses: actions/setup-node@v1
+    - uses: actions/setup-node@v2
       with:
         node-version: 14
     - name: install

.github/workflows/publish.yml

@@ -9,7 +9,7 @@ jobs:
     - uses: actions/checkout@v2
       with:
         ref: master
-    - uses: actions/setup-node@v1
+    - uses: actions/setup-node@v2
       with:
         node-version: 12.x
         registry-url: https://registry.npmjs.org

.github/workflows/update-ts-version-tags.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-    - uses: actions/setup-node@v1
+    - uses: actions/setup-node@v2
     - name: retag
       run: |
         git clone --depth 1 https://github.com/DefinitelyTyped/DefinitelyTyped ../DefinitelyTyped