release: update Azure storage resource names

The previous Azure resource architecture separated GCM and Microsoft Git
resources into different Resource Groups. This led to redundancy - we were
storing all our secrets, certificates, etc. in two places. These updates
reflect the consolidation of these resources into the new esrp Resource
Group.

.github/set_up_esrp.ps1

@@ -1,5 +1,5 @@
 # Install ESRP client
-az storage blob download --file esrp.zip --account-key "$env:AZURE_STORAGE_KEY" --account-name gcmesrp --container microsoft-esrp-client --name microsoft.esrpclient.1.2.76.nupkg
+az storage blob download --file esrp.zip --account-key "$env:AZURE_STORAGE_KEY" --account-name esrpsigningstorage --container signing-resources --name microsoft.esrpclient.1.2.76.nupkg
 Expand-Archive -Path esrp.zip -DestinationPath .\esrp
 
 # Install certificates