Bump packaging from 21.3 to 26.0

Bumps [packaging](https://github.com/pypa/packaging) from 21.3 to 26.0.
- [Release notes](https://github.com/pypa/packaging/releases)
- [Changelog](https://github.com/pypa/packaging/blob/main/CHANGELOG.rst)
- [Commits](pypa/packaging@21.3...26.0)

---
updated-dependencies:
- dependency-name: packaging
  dependency-version: '26.0'
  dependency-type: indirect
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

docs-requirements.txt

@@ -22,12 +22,10 @@ jinja2==3.0.3
     # via sphinx
 markupsafe==2.0.1
     # via jinja2
-packaging==21.3
+packaging==26.0
     # via sphinx
 pygments==2.12.0
     # via sphinx
-pyparsing==3.0.9
-    # via packaging
 pytz==2022.1
     # via babel
 requests==2.27.1

test-requirements.txt

@@ -1,36 +1,18 @@
 # 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
-    # via sphinx
 async-generator==1.10
     # via -r test-requirements.in
-babel==2.17.0
-    # via sphinx
-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==0.22.4
     # 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
+iniconfig==2.1.0
     # via pytest
 jinja2==3.1.6
     # via sphinx
@@ -39,9 +21,7 @@ lxml==6.0.2
 markupsafe==3.0.3
     # via jinja2
 packaging==26.0
-    # via
-    #   pytest
-    #   sphinx
+    # via pytest
 pluggy==1.6.0
     # via
     #   pytest
@@ -50,42 +30,17 @@ 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.*'
+sphinx==1.2.3
     # via -r test-requirements.in
-sphinx==9.1.0 ; python_full_version >= '3.12'
-    # via -r test-requirements.in
-sphinxcontrib-applehelp==2.0.0
-    # via sphinx
-sphinxcontrib-devhelp==2.0.0
-    # via sphinx
-sphinxcontrib-htmlhelp==2.1.0
-    # via sphinx
-sphinxcontrib-jsmath==1.0.1
-    # via sphinx
-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