FIX: add more dotnet setup (#3181)

* UPDATE: move dotnet setup to run before checkout

.github/workflows/build.yml

@@ -138,6 +138,11 @@ jobs:
             base_path: ./bitwarden_license/src
             node: true
     steps:
+      - name: Set up dotnet
+        uses: actions/setup-dotnet@3447fd6a9f9e57506b15f895c5b76d3b197dc7c2 # v3.2.0
+        with:
+          dotnet-version: "6.0.x"
+
       - name: Checkout repo
         uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
 
@@ -478,6 +483,11 @@ jobs:
           - linux-x64
           - win-x64
     steps:
+      - name: Set up dotnet
+        uses: actions/setup-dotnet@3447fd6a9f9e57506b15f895c5b76d3b197dc7c2 # v3.2.0
+        with:
+          dotnet-version: "6.0.x"
+
       - name: Checkout repo
         uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3