Upgrade Google Cloud libraries-bom to 26.21.0

[jamesnetherton]

Updates to FakeStorageRpc are just a sync from it's original source.

[github-actions]

🌟 Thank you for your contribution to the Apache Camel project! 🌟

🐫 Maintainers, please note that first-time contributors require manual approval for the GitHub Actions to run.

⚠️ Please note that the changes on this PR may be tested automatically if they change components.

🤖 Use the command /component-test (camel-)component-name1 (camel-)component-name2.. to request a test from the test bot.

If necessary Apache Camel Committers may access logs and test results in the job summaries!

[jamesnetherton]

/component-test camel-google-bigquery camel-google-functions camel-google-pubsub camel-google-secret-manager camel-google-storage

Result ❌ The tests failed please check the logs

[github-actions]

🤖 The Apache Camel test robot will run the tests for you 👍

[github-actions]

🤖 The Apache Camel test robot will run the tests for you 👍

[jamesnetherton]

Not sure what's going on with component auto testing. I tested this locally in the impacted components and the tests passed.