chore(deps): bump duckduckgo-search from 5.3.0 to 6.2.6 in /application

Bumps [duckduckgo-search](https://github.com/deedy5/duckduckgo_search) from 5.3.0 to 6.2.6.
- [Release notes](https://github.com/deedy5/duckduckgo_search/releases)
- [Commits](https://github.com/deedy5/duckduckgo_search/compare/v5.3.0...v6.2.6)

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

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

application/requirements.txt

@@ -3,7 +3,7 @@ boto3==1.34.6
 celery==5.3.6
 dataclasses_json==0.6.3
 docx2txt==0.8
-duckduckgo-search==5.3.0
+duckduckgo-search==6.2.6
 EbookLib==0.18
 elasticsearch==8.12.0
 escodegen==1.0.11