Updates for tfc-agent release 1.22.0 (#144)

Author: kelsi-hoyle

website/docs/cloud-docs/agents/changelog.mdx

@@ -18,6 +18,12 @@ within each release are categorized into one or more of the following labels:
 Each version below corresponds to a release artifact available for download on
 the official [releases website](https://releases.hashicorp.com/tfc-agent/).
 
+## 1.22.0 (04/15/2025)
+
+FEATURES:
+
+* Added ability to check for private module versions that are revoked and display revocations warnings in the run output of existing module consumers. New users of the revoked version will see an error in their run output. (#973)
+
 ## 1.21.2 (04/03/2025)
 
 BUG FIXES: