chore(deps): update actions/checkout action to v2.7.0

Author: renovate[bot]

.github/workflows/build-test.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout 🛎️
-        uses: actions/checkout@v2.6.0
+        uses: actions/checkout@v2.7.0
 
       - name: Install and Build 🔧 
         run: |

.github/workflows/release.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-18.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v2.6.0
+        uses: actions/checkout@v2.7.0
         with:
           fetch-depth: 0
       - name: Install and Build 🔧