chore(ci): use .NET SDK version from global.json

Author: xperiandri

.github/workflows/build+test+deploy.yml

@@ -14,9 +14,6 @@ on:
     branches:
       - '**'
 
-env:
-  DOTNET_VERSION: 9.0.201
-
 jobs:
   buildAndTest:
 
@@ -33,7 +30,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: ${{ env.DOTNET_VERSION }}
+        global-json-file: global.json
     - name: Restore tools
       run: dotnet tool restore
     - name: Restore dependencies
@@ -55,7 +52,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: ${{ env.DOTNET_VERSION }}
+        global-json-file: global.json
     - name: Restore tools
       run: dotnet tool restore
     - name: Build
@@ -110,7 +107,7 @@ jobs:
     - name: Setup .NET
       uses: actions/setup-dotnet@v4
       with:
-        dotnet-version: ${{ env.DOTNET_VERSION }}
+        global-json-file: global.json
 
     - name: Restore tools
       run: dotnet tool restore