Bump pygments in /www/smart_mirror_rest/SmartMirrorRest

Bumps [pygments](https://github.com/pygments/pygments) from 2.6.1 to 2.7.4.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.6.1...2.7.4)

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

Author: dependabot[bot]

www/smart_mirror_rest/SmartMirrorRest/requirements.txt

@@ -6,7 +6,7 @@ djangorestframework==3.12.0
 httpie==2.2.0
 idna==2.10
 Pillow==9.0.1
-Pygments==2.7.3
+Pygments==2.7.4
 pytz==2020.1
 requests==2.24.0
 sqlparse==0.4.2