Use more tolerant regex to replace NuGet version

Author: mythz

build/build.proj

@@ -55,7 +55,7 @@
       </RegexTransform>
       <!--Update Min Dependency Version -->
       <RegexTransform Include="$(NuGetPackageDir)/**/*.nuspec">
-        <Find>version="5\.0[^"]*"</Find>
+        <Find>version="5\.[^"]*"</Find>
         <ReplaceWith>version="$(PackageVersion)"</ReplaceWith>
       </RegexTransform>
     </ItemGroup>