Updated credscan-exclusion.json to include OpenIdConnectParameterNames
Updated credscan-exclusion.json to include OpenIdConnectParameterNames

One of the constants in this file has a value of 'client_secret' which triggers a CredScan issue.

AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet,AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet,AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet,AzureAD/azure-activedirectory-identitymodel-extensions-for-dotnet