Bump pyasn1-modules from 0.2.7 to 0.2.8

Bumps [pyasn1-modules](https://github.com/etingof/pyasn1-modules) from 0.2.7 to 0.2.8.
- [Release notes](https://github.com/etingof/pyasn1-modules/releases)
- [Changelog](https://github.com/etingof/pyasn1-modules/blob/master/CHANGES.txt)
- [Commits](etingof/pyasn1-modules@v0.2.7...v0.2.8)

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

requirements.txt

@@ -21,7 +21,7 @@ plaster==1.0
 plaster-pastedeploy==0.7
 prettytable==0.7.2
 pyasn1==0.4.8
-pyasn1-modules==0.2.7
+pyasn1-modules==0.2.8
 pycparser==2.19
 pyramid==1.10.4
 pyramid-multiauth==0.9.0