fix: additional 3.1.0 constants after merge and v2 release

Author: baywet

src/Microsoft.OpenApi.Workbench/MainWindow.xaml

@@ -40,7 +40,7 @@
                     </StackPanel>
                     <StackPanel Orientation="Horizontal" VerticalAlignment="Center">
                         <Label>Version:</Label>
-                        <RadioButton GroupName="Format" Content="V3.1.0" Padding="5" Height="24" VerticalAlignment="Top" IsChecked="{Binding IsV3_1}" />
+                        <RadioButton GroupName="Format" Content="V3.1.1" Padding="5" Height="24" VerticalAlignment="Top" IsChecked="{Binding IsV3_1}" />
                         <RadioButton GroupName="Format" Content="V3.0.4" Padding="5" Height="24" VerticalAlignment="Top" IsChecked="{Binding IsV3_0}" />
                         <RadioButton GroupName="Format" Content="V2.0" Padding="5" Height="24" VerticalAlignment="Top" IsChecked="{Binding IsV2_0}" />
                     </StackPanel>

test/Microsoft.OpenApi.Readers.Tests/V31Tests/OpenApiDocumentTests.ParseDocumentWith31PropertiesWorks.verified.txt

@@ -1,4 +1,4 @@
-openapi: '3.1.0'
+openapi: '3.1.1'
 jsonSchemaDialect: https://json-schema.org/draft/2020-12/schema
 info:
   title: Sample OpenAPI 3.1 API

test/Microsoft.OpenApi.Readers.Tests/V31Tests/Samples/OpenApiDocument/documentWith31Properties.yaml

@@ -1,4 +1,4 @@
-openapi: 3.1.0
+openapi: 3.1.1
 info:
   title: Sample OpenAPI 3.1 API
   description: A sample API demonstrating OpenAPI 3.1 features