Update changelogs from fern repo (#3488)

Co-authored-by: iamnamananand996 <31537362+iamnamananand996@users.noreply.github.com>

Author: fern-support

fern/products/cli-api-reference/cli-changelog/2026-02-05.mdx

@@ -1,3 +1,7 @@
+## 3.64.2
+**`(feat):`** Add support for OpenAPI server templating. Server variables are now preserved in the IR instead of being exploded into multiple environments, enabling SDKs to configure URL variables at runtime. Supports both single and multiple base URL environments.
+
+
 ## 3.64.1
 **`(fix):`** Fix example validation to correctly handle allOf schema compositions. Properties from composed schemas are now properly recognized, eliminating false positive "unexpected property" warnings.