build(deps): bump aiohttp from 3.11.13 to 3.13.4 (#5)

---
updated-dependencies:
- dependency-name: aiohttp
  dependency-version: 3.13.4
  dependency-type: direct:production
...

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haystack/requirements.txt

@@ -1,5 +1,5 @@
 aiohappyeyeballs==2.4.6
-aiohttp==3.11.13
+aiohttp==3.13.4
 aiosignal==1.3.2
 annotated-types==0.7.0
 anyio==4.8.0