ci: bump version of checkout actions

Author: developher-net

.github/workflows/release.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - uses: actions/setup-node@v2
         with:
           node-version: 16

.github/workflows/run-tests.yml

@@ -20,7 +20,7 @@ jobs:
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - name: Use Node.js ${{ matrix.node-version }}
       uses: actions/setup-node@v2
       with:

.github/workflows/update-badges.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
 
-      - uses: actions/checkout@v2                # clones your repo, make sure the ssh secret is set!
+      - uses: actions/checkout@v3                # clones your repo, make sure the ssh secret is set!
         with:
           ref: ${{ github.head_ref }}
           token: ${{ secrets.GH_PAT }}           # token-based checkout is required because of branch protections on master