chore(deps): bump pytz from 2026.3.post1 to 2026.4

Bumps [pytz](https://github.com/stub42/pytz) from 2026.3.post1 to 2026.4.
- [Release notes](https://github.com/stub42/pytz/releases)
- [Commits](https://github.com/stub42/pytz/compare/release_2026.3.post1...release_2026.4)

---
updated-dependencies:
- dependency-name: pytz
  dependency-version: '2026.4'
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

poetry.lock

@@ -1,4 +1,4 @@
-# This file is automatically @generated by Poetry 2.4.1 and should not be changed by hand.
+# This file is automatically @generated by Poetry 2.4.3 and should not be changed by hand.
 
 [[package]]
 name = "argcomplete"
@@ -464,14 +464,14 @@ dev = ["black", "build", "mypy", "pytest", "pytest-cov", "setuptools", "tox", "t
 
 [[package]]
 name = "pytz"
-version = "2026.3.post1"
+version = "2026.4"
 description = "World timezone definitions, modern and historical"
 optional = false
 python-versions = "*"
 groups = ["main"]
 files = [
-    {file = "pytz-2026.3.post1-py2.py3-none-any.whl", hash = "sha256:dd95840dd199baea12d9cc096a1d452caa6596a1c1e4b5f3dbd1541855d5e815"},
-    {file = "pytz-2026.3.post1.tar.gz", hash = "sha256:2211d3fcf9a797d3405cac96ac7f61d80e6a644f72a3309607282fe8a2010c5d"},
+    {file = "pytz-2026.4-py2.py3-none-any.whl", hash = "sha256:9d514388fbc89ca0833203464272ac485b8828568ab73532f5020f17e892a0ff"},
+    {file = "pytz-2026.4.tar.gz", hash = "sha256:464303645bafafd72418898368b2429458f709cf1eb6a15372fbcc396b64da63"},
 ]
 
 [[package]]
@@ -613,4 +613,4 @@ tests = ["pytest", "pytest-cov"]
 [metadata]
 lock-version = "2.1"
 python-versions = "^3.12"
-content-hash = "086daa71e78d38f15df47495037fdbd7bce2bd669516d23d3ad69c70268b54f8"
+content-hash = "18bc7d919bd42f73559beace8a7b9c9e8651eb50c145e0c1c07011ad58ff8c38"

pyproject.toml

@@ -15,7 +15,7 @@ dependencies = [
     "kosmorrolib (>=1.0,<2.0)",
     "python-dateutil (>=2.8,<3.0)",
     "Babel (>=2.9,<3.0)",
-    "pytz (>=2026.3.post1,<2027.0)",
+    "pytz (>=2026.4,<2027.0)",
     "argcomplete (>=3.7.2,<4.0)",
 ]