attempt to run release-notes with .NET 9

Author: Mpdreamz

.github/workflows/bootstrap/action.yml

@@ -13,9 +13,8 @@ runs:
           
     # Install .NET version as mandated by global.json
     - uses: actions/setup-dotnet@v4
-      with: |
-        8.0.x
-        6.0.x
+      with:
+        global-json-file: global.json
 
     # Setup git config
     - uses: elastic/oblt-actions/git/setup@v1

global.json

@@ -1,6 +1,6 @@
 {
   "sdk": {
-    "version": "8.0.100",
+    "version": "9.0.100",
     "rollForward": "latestFeature",
     "allowPrerelease": false
   }