Bump alabaster from 0.7.12 to 0.7.16

Bumps [alabaster](https://github.com/sphinx-doc/alabaster) from 0.7.12 to 0.7.16.
- [Release notes](https://github.com/sphinx-doc/alabaster/releases)
- [Changelog](https://github.com/sphinx-doc/alabaster/blob/master/docs/changelog.rst)
- [Commits](sphinx-doc/alabaster@0.7.12...0.7.16)

---
updated-dependencies:
- dependency-name: alabaster
  dependency-version: 0.7.16
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

docs-requirements.txt

@@ -4,7 +4,7 @@
 #
 #    pip-compile ci/rtd-requirements.in
 #
-alabaster==0.7.12
+alabaster==0.7.16
     # via sphinx
 babel==2.10.1
     # via sphinx

test-requirements.txt

@@ -1,6 +1,6 @@
 # This file was autogenerated by uv via the following command:
 #    uv pip compile --universal --python-version=3.10 test-requirements.in -o test-requirements.txt
-alabaster==1.0.0
+alabaster==0.7.16
     # via sphinx
 async-generator==1.10
     # via -r test-requirements.in
@@ -10,27 +10,23 @@ certifi==2026.1.4
     # via requests
 charset-normalizer==3.4.4
     # via requests
-colorama==0.4.6 ; sys_platform == 'win32'
-    # via
-    #   pytest
-    #   sphinx
 contextlib2==21.6.0
     # via -r test-requirements.in
-coverage==7.13.1
+coverage[toml]==7.10.7
     # via pytest-cov
 cssselect==1.3.0
     # via -r test-requirements.in
-docutils==0.21.2 ; python_full_version < '3.11'
-    # via sphinx
-docutils==0.22.4 ; python_full_version >= '3.11'
+docutils==0.21.2
     # via sphinx
-exceptiongroup==1.3.1 ; python_full_version < '3.11'
+exceptiongroup==1.3.1
     # via pytest
 idna==3.11
     # via requests
 imagesize==1.4.1
     # via sphinx
-iniconfig==2.3.0
+importlib-metadata==8.7.1
+    # via sphinx
+iniconfig==2.1.0
     # via pytest
 jinja2==3.1.6
     # via sphinx
@@ -50,23 +46,17 @@ pygments==2.19.2
     # via
     #   pytest
     #   sphinx
-pytest==9.0.2
+pytest==8.4.2
     # via
     #   -r test-requirements.in
     #   pytest-cov
 pytest-cov==7.0.0
     # via -r test-requirements.in
 requests==2.32.5
     # via sphinx
-roman-numerals==4.1.0 ; python_full_version >= '3.11'
-    # via sphinx
 snowballstemmer==3.0.1
     # via sphinx
-sphinx==8.1.3 ; python_full_version < '3.11'
-    # via -r test-requirements.in
-sphinx==9.0.4 ; python_full_version == '3.11.*'
-    # via -r test-requirements.in
-sphinx==9.1.0 ; python_full_version >= '3.12'
+sphinx==7.4.7
     # via -r test-requirements.in
 sphinxcontrib-applehelp==2.0.0
     # via sphinx
@@ -80,12 +70,14 @@ sphinxcontrib-qthelp==2.0.0
     # via sphinx
 sphinxcontrib-serializinghtml==2.0.0
     # via sphinx
-tomli==2.4.0 ; python_full_version <= '3.11'
+tomli==2.4.0
     # via
     #   coverage
     #   pytest
     #   sphinx
-typing-extensions==4.15.0 ; python_full_version < '3.11'
+typing-extensions==4.15.0
     # via exceptiongroup
 urllib3==2.6.3
     # via requests
+zipp==3.23.0
+    # via importlib-metadata