Bump pyramid-tm from 2.2.1 to 2.3

Bumps [pyramid-tm](https://github.com/Pylons/pyramid_tm) from 2.2.1 to 2.3.
- [Release notes](https://github.com/Pylons/pyramid_tm/releases)
- [Changelog](https://github.com/Pylons/pyramid_tm/blob/master/CHANGES.rst)
- [Commits](Pylons/pyramid_tm@2.2.1...2.3)

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

requirements.txt

@@ -21,7 +21,7 @@ plaster-pastedeploy==0.7
 pycparser==2.19
 pyramid==1.10.4
 pyramid-multiauth==0.9.0
-pyramid-tm==2.2.1
+pyramid-tm==2.3
 python-dateutil==2.8.0
 repoze.lru==0.7
 requests==2.22.0