Update branding on release/9.0 (#65634)

Author: vseanreesermsft

eng/Versions.props

@@ -8,7 +8,7 @@
   <PropertyGroup Label="Version settings">
     <AspNetCoreMajorVersion>9</AspNetCoreMajorVersion>
     <AspNetCoreMinorVersion>0</AspNetCoreMinorVersion>
-    <AspNetCorePatchVersion>14</AspNetCorePatchVersion>
+    <AspNetCorePatchVersion>15</AspNetCorePatchVersion>
     <PreReleaseVersionIteration>
     </PreReleaseVersionIteration>
     <IdentityModelVersion Condition="'$(IsIdentityModelTestJob)' != 'true'">8.0.1</IdentityModelVersion>