Bump pygments from 2.7.4 to 2.15.0 in /Traffic-Sign-Detection

Bumps [pygments](https://github.com/pygments/pygments) from 2.7.4 to 2.15.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.7.4...2.15.0)

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

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

Author: dependabot[bot]

Traffic-Sign-Detection/requirements.txt

@@ -76,7 +76,7 @@ pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycparser==2.20
 pydot==1.4.1
-Pygments==2.7.4
+Pygments==2.15.0
 pyparsing==2.4.7
 PyQt5==5.15.2
 PyQt5-sip==12.8.1