Update changelogs from fern repo (#5123)

Co-authored-by: dsinghvi <10870189+dsinghvi@users.noreply.github.com>

Author: fern-support

fern/products/cli-api-reference/cli-changelog/2026-04-23.mdx

@@ -1,3 +1,10 @@
+## 4.91.0
+**`(internal):`** Remove the abandoned `@fern-api/docs-parsers` dependency from `@fern-api/docs-resolver` and drop
+the hidden `fern fdr <path> --v2` code path that was the only remaining consumer. The upstream
+package was deleted from fern-platform in https://github.com/fern-api/fern-platform/pull/2420
+and hasn't been published since; removing it clears the transitive `uuid@9.0.1` from the lockfile.
+
+
 ## 4.90.0
 **`(internal):`** Implement the FER-9980 autoversion pipeline. A new `GenerationCommitStep` +
 `AutoVersionStep` run between the `[fern-generated]` commit and replay

fern/products/sdks/generators/go/changelog/2026-04-23.mdx

@@ -0,0 +1,9 @@
+## 1.36.0
+**`(feat):`** Support omitting username or password from basic auth when configured via
+`usernameOmit`/`passwordOmit` in the IR. When a field is omitted, it is
+removed from the SDK's public API (`WithBasicAuth` takes fewer arguments)
+and an empty string is used internally for the auth header encoding. When
+both fields are omitted, the `WithBasicAuth` call and Authorization header
+are skipped entirely.
+
+