Revert mistaken change: Retain revision 31 for release 1.31

Author: claudiamurialdo

dotnet/Directory.Build.props

@@ -2,7 +2,7 @@
 	<PropertyGroup>
 		<AssemblyVersion>11.0.0.0</AssemblyVersion>
 		<MajorFileVersion>1</MajorFileVersion>
-		<MinorFileVersion>32</MinorFileVersion>
+		<MinorFileVersion>31</MinorFileVersion>
 		<PatchFileVersion Condition="'$(COMMIT_NUMBER)'!=''">$(COMMIT_NUMBER)</PatchFileVersion>
 		<PatchFileVersion Condition="'$(COMMIT_NUMBER)'==''">0</PatchFileVersion>
 		<FileVersion>$(MajorFileVersion).$(MinorFileVersion).$(PatchFileVersion)</FileVersion>