chore: removes future version after cherry-pick

Author: baywet

test/Microsoft.OpenApi.Tests/Models/OpenApiSchemaTests.cs

@@ -1798,7 +1798,6 @@ public async Task SerializeMultipleExamplesInV2V3WhenExampleUnset(OpenApiSpecVer
 
         [Theory]
         [InlineData(OpenApiSpecVersion.OpenApi3_1)]
-        [InlineData(OpenApiSpecVersion.OpenApi3_2)]
         public async Task SerializeExamplesAsJsonSchemaKeywordInV31AndLater(OpenApiSpecVersion version)
         {
             var expected = """