chore(deps): pin dependencies

Author: renovate[bot]

.github/workflows/master_altinn-testtools-token-generator.yml

@@ -18,10 +18,10 @@ jobs:
     runs-on: windows-latest
     steps:
       - name: 'Checkout GitHub Action'
-        uses: actions/checkout@v2
+        uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5 # v2
 
       - name: Setup DotNet ${{ env.DOTNET_VERSION }} Environment
-        uses: actions/setup-dotnet@v1
+        uses: actions/setup-dotnet@871f041373faaad213a635d9afb62905ec029bbb # v1
         with:
           dotnet-version: ${{ env.DOTNET_VERSION }}
 
@@ -33,7 +33,7 @@ jobs:
           popd
 
       - name: 'Run Azure Functions Action'
-        uses: Azure/functions-action@v1
+        uses: Azure/functions-action@02a16c5f3a5707fa97fca56c202cc2ef6cc7dccb # v1
         id: fa
         with:
           app-name: 'altinn-testtools-token-generator'