Update versions in BC template

Author: gewarren

.github/ISSUE_TEMPLATE/breaking-change.yaml

@@ -22,12 +22,14 @@ body:
       options:
         - .NET 8
         - .NET 9
-        - .NET 10 Preview 1
-        - .NET 10 Preview 2
-        - .NET 10 Preview 3
         - .NET 10 Preview 4
         - .NET 10 Preview 5
         - .NET 10 Preview 6
+        - .NET 10 RC 1
+        - .NET 10 RC 2
+        - .NET 10 GA
+        - .NET 11 Preview 1
+        - .NET 11 Preview 2
         - Other (please put exact version in description textbox)
     validations:
       required: true