build(deps): Bump rocm-docs-core from 0.26.0 to 0.28.0 in /docs/sphinx (

#6)

Bumps [rocm-docs-core](https://github.com/RadeonOpenCompute/rocm-docs-core) from 0.26.0 to 0.28.0.
- [Release notes](https://github.com/RadeonOpenCompute/rocm-docs-core/releases)
- [Changelog](https://github.com/RadeonOpenCompute/rocm-docs-core/blob/develop/CHANGELOG.md)
- [Commits](ROCm/rocm-docs-core@v0.26.0...v0.28.0)

---
updated-dependencies:
- dependency-name: rocm-docs-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

docs/sphinx/requirements.in

@@ -1,3 +1,3 @@
-rocm-docs-core==0.26.0
+rocm-docs-core==0.28.0
 Sphinx-Substitution-Extensions==2022.2.16
 sphinxcontrib.datatemplates==0.9.2

docs/sphinx/requirements.txt

@@ -49,10 +49,6 @@ idna==3.4
     # via requests
 imagesize==1.4.1
     # via sphinx
-importlib-metadata==6.8.0
-    # via sphinx
-importlib-resources==6.1.0
-    # via rocm-docs-core
 jinja2==3.1.2
     # via
     #   myst-parser
@@ -106,7 +102,7 @@ requests==2.31.0
     # via
     #   pygithub
     #   sphinx
-rocm-docs-core==0.26.0
+rocm-docs-core==0.28.0
     # via -r requirements.in
 smmap==5.0.0
     # via gitdb
@@ -162,7 +158,3 @@ urllib3==1.26.13
     # via requests
 wrapt==1.14.1
     # via deprecated
-zipp==3.17.0
-    # via
-    #   importlib-metadata
-    #   importlib-resources