Bump aiosignal from 1.3.2 to 1.4.0

Bumps [aiosignal](https://github.com/aio-libs/aiosignal) from 1.3.2 to 1.4.0.
- [Release notes](https://github.com/aio-libs/aiosignal/releases)
- [Changelog](https://github.com/aio-libs/aiosignal/blob/master/CHANGES.rst)
- [Commits](aio-libs/aiosignal@v1.3.2...v1.4.0)

---
updated-dependencies:
- dependency-name: aiosignal
  dependency-version: 1.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -1,7 +1,7 @@
 aiofiles==24.1.0
 aiohappyeyeballs==2.6.1
 aiohttp==3.12.15
-aiosignal==1.3.2
+aiosignal==1.4.0
 attrs==25.3.0
 backoff==2.2.1
 beautifulsoup4==4.13.4