Increase timeout for Key Vault live tests (#19315)
Increase timeout for Key Vault live tests (#19315)

Some of our longer tests cannot run concurrently, and additional
certificate-based tests (which tend to be LONG-running operations) have
been added that are timing out live runs.
ayeletshpigelman/azure-sdk-for-net,AsrOneSdk/azure-sdk-for-net,jackmagic313/azure-sdk-for-net,jackmagic313/azure-sdk-for-net,AsrOneSdk/azure-sdk-for-net,jackmagic313/azure-sdk-for-net,ayeletshpigelman/azure-sdk-for-net,AsrOneSdk/azure-sdk-for-net,jackmagic313/azure-sdk-for-net,ayeletshpigelman/azure-sdk-for-net,AsrOneSdk/azure-sdk-for-net,jackmagic313/azure-sdk-for-net,ayeletshpigelman/azure-sdk-for-net