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

Author: renovate-bot

.github/workflows/branch.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
       - name: Restore

.github/workflows/master.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
         with:

.github/workflows/production.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v2
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v1
       - name: Restore