Bump duckduckgo-search from 7.4.4 to 7.5.1 (#158)

Bumps [duckduckgo-search](https://github.com/deedy5/duckduckgo_search) from 7.4.4 to 7.5.1.
- [Release notes](https://github.com/deedy5/duckduckgo_search/releases)
- [Commits](deedy5/duckduckgo_search@v7.4.4...v7.5.1)

---
updated-dependencies:
- dependency-name: duckduckgo-search
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

requirements.txt

@@ -1,5 +1,5 @@
 faiss-cpu==1.10.0
-duckduckgo_search==7.4.4
+duckduckgo_search==7.5.1
 beautifulsoup4==4.13.3
 unstructured==0.16.23
 rank_bm25==0.2.2