Bump the 6.0.x reference to 6.0.12 (#78331)

Author: lewing

eng/Versions.props

@@ -7,7 +7,7 @@
     <MinorVersion>0</MinorVersion>
     <PatchVersion>1</PatchVersion>
     <SdkBandVersion>7.0.100</SdkBandVersion>
-    <PackageVersionNet6>6.0.11</PackageVersionNet6>
+    <PackageVersionNet6>6.0.12</PackageVersionNet6>
     <PreReleaseVersionLabel>servicing</PreReleaseVersionLabel>
     <PreReleaseVersionIteration>
     </PreReleaseVersionIteration>