Bump pillow from 6.2.0 to 9.0.0 in /Linux系统下开发环境搭建

Bumps [pillow](https://github.com/python-pillow/Pillow) from 6.2.0 to 9.0.0.
- [Release notes](https://github.com/python-pillow/Pillow/releases)
- [Changelog](https://github.com/python-pillow/Pillow/blob/main/CHANGES.rst)
- [Commits](python-pillow/Pillow@6.2.0...9.0.0)

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

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

Author: dependabot[bot]

Linux系统下开发环境搭建/requirements.txt

@@ -34,7 +34,7 @@ pandocfilters==1.4.2
 parso==0.3.1
 pexpect==4.6.0
 pickleshare==0.7.5
-Pillow==6.2.0
+Pillow==9.0.0
 prometheus-client==0.5.0
 prompt-toolkit==2.0.7
 ptyprocess==0.6.0