build(deps): bump lxml in /Twitter_Scraper_without_API

Bumps [lxml](https://github.com/lxml/lxml) from 4.6.5 to 4.9.1.
- [Release notes](https://github.com/lxml/lxml/releases)
- [Changelog](https://github.com/lxml/lxml/blob/master/CHANGES.txt)
- [Commits](lxml/lxml@lxml-4.6.5...lxml-4.9.1)

---
updated-dependencies:
- dependency-name: lxml
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Twitter_Scraper_without_API/requirements.txt

@@ -2,7 +2,7 @@ beautifulsoup4==4.9.3
 certifi==2020.12.5
 chardet==4.0.0
 idna==2.10
-lxml==4.6.5
+lxml==4.9.1
 PySocks==1.7.1
 requests==2.25.1
 snscrape==0.3.4