Update actions/checkout action to v3 (#6)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

.github/workflows/NodeCI.yml

@@ -10,7 +10,7 @@ jobs:
     lint:
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v3
             - uses: actions/setup-node@v3
               with:
                   node-version: 16
@@ -24,7 +24,7 @@ jobs:
             matrix:
                 node-version: [12.x, 14.x, 16.x]
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v3
             - name: Use Node.js ${{ matrix.node-version }}
               uses: actions/setup-node@v3
               with:

.github/workflows/NpmPublish.yml

@@ -9,7 +9,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: checkout
-              uses: actions/checkout@v2
+              uses: actions/checkout@v3
             - name: setup Node
               uses: actions/setup-node@v3
               with: