chore(deps): update haystack-ai requirement in /integrations/pinecone

Updates the requirements on [haystack-ai](https://github.com/deepset-ai/haystack) to permit the latest version.
- [Release notes](https://github.com/deepset-ai/haystack/releases)
- [Commits](deepset-ai/haystack@v2.28.0...v2.29.0)

---
updated-dependencies:
- dependency-name: haystack-ai
  dependency-version: 2.29.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

integrations/pinecone/pyproject.toml

@@ -24,7 +24,7 @@ classifiers = [
   "Programming Language :: Python :: Implementation :: PyPy",
 ]
 dependencies = [
-  "haystack-ai>=2.28.0",
+  "haystack-ai>=2.29.0",
   "pinecone[asyncio]>=7.0.0",
 ]