Create Fable3 global json

Author: wallymathieu

.github/workflows/fable.yml

@@ -21,9 +21,14 @@ jobs:
       uses: actions/setup-dotnet@v3
       with:
         dotnet-version: |
+          8.0.x
+          7.0.x
           6.0.x
     - name: Restore tools
       run: dotnet tool restore
+    - name: Create global.json
+      working-directory: tests/FSharpPlusFable.Tests
+      run: mv fable3-global.json global.json
     - name: Install fable
       run: dotnet tool install --global Fable --version 3.7.22
     - name: Use Node.js

tests/FSharpPlusFable.Tests/fable3-global.json

@@ -0,0 +1 @@
+{ "sdk": { "version": "6.0.201", "rollForward": "latestFeature" } }