Bump langchain-couchbase from 0.2.2 to 0.2.4 (#84)

Bumps [langchain-couchbase](https://github.com/Couchbase-Ecosystem/langchain-couchbase) from 0.2.2 to 0.2.4.
- [Release notes](https://github.com/Couchbase-Ecosystem/langchain-couchbase/releases)
- [Commits](Couchbase-Ecosystem/langchain-couchbase@langchain-couchbase==0.2.2...langchain-couchbase==0.2.4)

---
updated-dependencies:
- dependency-name: langchain-couchbase
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements.txt

@@ -1,5 +1,5 @@
 beautifulsoup4==4.12.3
-langchain-couchbase==0.2.2
+langchain-couchbase==0.2.4
 langchain-community==0.3.16
 langchain-openai==0.3.3
 langsmith==0.3.4