Update branding to 6.0.3

[vseanreesermsft]

No description provided.

[ghost]

Hi @vseanreesermsft. If this is not a tell-mode PR, please make sure to follow the instructions laid out in the servicing process document.
Otherwise, please add tell-mode label.

[TanayParikh]

Failing on missing dep;

##[error]src\Grpc\test\testassets\InteropWebsite\InteropWebsite.csproj(0,0): error NU1102: (NETCORE_ENGINEERING_TELEMETRY=Restore) Unable to find package Microsoft.AspNetCore.App.Ref with version (= 6.0.2)
  - Found 2100 version(s) in dotnet6 [ Nearest version: 6.0.0-rtm.21520.4 ]
  - Found 972 version(s) in dotnet5 [ Nearest version: 5.0.0-rtm.20512.8 ]
  - Found 39 version(s) in dotnet-public [ Nearest version: 6.0.0 ]
  - Found 1 version(s) in dotnet-tools [ Nearest version: 5.0.0-rc.2.20513.11 ]
  - Found 0 version(s) in D:\a\_work\1\s\artifacts\packages\Release\Shipping\
  - Found 0 version(s) in richnav
  - Found 0 version(s) in dotnet-eng
  - Found 0 version(s) in dotnet-experimental
  - Found 0 version(s) in dotnet31-transport
  - Found 0 version(s) in dotnet5-transport
  - Found 0 version(s) in dotnet6-transport
  Failed to restore D:\a\_work\1\s\src\Grpc\test\testassets\InteropWebsite\InteropWebsite.csproj (in 10.24 sec).
  Restored D:\a\_work\1\s\src\Grpc\test\testassets\InteropClient\InteropClient.csproj (in 10.87 sec).

[wtgodbe]

I think this would be fixed by #39620 - it's looking for 6.0.2 still but can't find it because it isn't being built, nor is it public yet. If we get Doug's PR in it'll be building & looking for 6.0.3