Update dependency babel to v2.18.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
babel (source)	==2.17.0 → ==2.18.0

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Release Notes

python-babel/babel (babel)

v2.18.0

Compare Source

Happy 2026! This release is, coincidentally, also being made from FOSDEM.

We will aspire for a slightly less glacial release cadence in this year;
there are interesting features in the pipeline.

Features

* Core: Add `babel.core.get_cldr_version()` by @​akx in :gh:`1242`
* Core: Use CLDR 47 by @​tomasr8 in :gh:`1210`
* Core: Use canonical IANA zone names in zone_territories by @​akx in :gh:`1220`
* Messages: Improve extract performance via ignoring directories early during os.walk by @​akx in :gh:`968`
* Messages: Merge in per-format keywords and auto_comments by @​akx in :gh:`1243`
* Messages: Update keywords for extraction of dpgettext and dnpgettext by @​mardiros in :gh:`1235`
* Messages: Validate all plurals in Python format checker by @​tomasr8 in :gh:`1188`
* Time: Use standard library `timezone` instead of `FixedOffsetTimezone` by @​akx in :gh:`1203`

Bugfixes

• Core: Fix formatting for "Empty locale identifier" exception added in #​1164 by @​akx in :gh:1184
• Core: Improve handling of no-inheritance-marker in timezone data by @​akx in :gh:1194
• Core: Make the number pattern regular expression more efficient by @​akx in :gh:1213
• Messages: Keep translator comments next to the translation function call by @​akx in :gh:1196
• Numbers: Fix KeyError that occurred when formatting compact currencies of exactly one thousand in several locales by @​bartbroere in :gh:1246

Other improvements

* Core: Avoid unnecessary uses of `map()` by @​akx in :gh:`1180`
* Messages: Have init-catalog create directories too by @​akx in :gh:`1244`
* Messages: Optimizations for read_po by @​akx in :gh:`1200`
* Messages: Use pathlib.Path() in catalog frontend; improve test coverage by @​akx in :gh:`1204`

Infrastructure and documentation

• CI: Renovate CI & lint tools by @​akx in :gh:1228
• CI: Tighten up CI with Zizmor by @​akx in :gh:1230
• CI: make job permissions explicit by @​akx in :gh:1227
• Docs: Add SECURITY.md by @​akx in :gh:1229
• Docs: Remove u string prefix from docs by @​verhovsky in :gh:1174
• Docs: Update dates.rst with current unicode.org tr35 link by @​clach04 in :gh:1189
• General: Add some PyPI classifiers by @​tomasr8 in :gh:1186
• General: Apply reformatting by hand and with Ruff by @​akx in :gh:1202
• General: Test on and declare support for Python 3.14 by @​akx in :gh:1233
• Tests: Convert Unittest testcases with setup/teardown to fixtures by @​akx in :gh:1240
• Tests: Mark PyPy CI flake as xfail by @​akx in :gh:1197
• Tests: Move pytest config to pyproject.toml by @​tomasr8 in :gh:1187
• Tests: Unwrap most unittest test cases to bare functions by @​akx in :gh:1241

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