Bump rocm-docs-core[api_reference] from 1.21.0 to 1.21.1 in /docs/sphinx (#161)

Bumps [rocm-docs-core[api_reference]](https://github.com/ROCm/rocm-docs-core) from 1.21.0 to 1.21.1.
- [Release notes](https://github.com/ROCm/rocm-docs-core/releases)
- [Changelog](https://github.com/ROCm/rocm-docs-core/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/ROCm/rocm-docs-core/compare/v1.21.0...v1.21.1)

---
updated-dependencies:
- dependency-name: rocm-docs-core[api_reference]
  dependency-version: 1.21.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

[ROCm/rocjpeg commit: 18a0a3324a]

projects/rocjpeg/docs/sphinx/requirements.in

@@ -1 +1 @@
-rocm-docs-core[api_reference]==1.21.0
+rocm-docs-core[api_reference]==1.21.1

projects/rocjpeg/docs/sphinx/requirements.txt

@@ -226,7 +226,7 @@ requests==2.32.3
     # via
     #   pygithub
     #   sphinx
-rocm-docs-core[api-reference]==1.21.0
+rocm-docs-core[api-reference]==1.21.1
     # via -r requirements.in
 rpds-py==0.22.3
     # via