Bump asciimatics from 1.12.0 to 1.15.0

Bumps [asciimatics](https://github.com/peterbrittain/asciimatics) from 1.12.0 to 1.15.0.
- [Release notes](https://github.com/peterbrittain/asciimatics/releases)
- [Changelog](https://github.com/peterbrittain/asciimatics/blob/master/CHANGES.rst)
- [Commits](peterbrittain/asciimatics@1.12.0...1.15.0)

---
updated-dependencies:
- dependency-name: asciimatics
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

pyproject.toml

@@ -47,7 +47,7 @@ vpe = ['grpcio_tools==1.34.0',
        'grpcio==1.34.0',
        'protobuf==3.14.0',]
 all = [  # currently no way to just use the names from above afaik?
-    'prompt_toolkit==3.0.33', 'asciimatics==1.12.0', 'terminaltables==3.1.0',
+    'prompt_toolkit==3.0.33', 'asciimatics==1.15.0', 'terminaltables==3.1.0',
     'requests==2.28.2', 'irc==19.0.1', 'smbus2_asyncio==0.0.5',
     'python-osc==1.7.4', 'pyusb==1.1.0', 'apigpio-mpf==0.0.4',
     'grpcio_tools==1.34.0', 'grpcio==1.34.0', 'protobuf==3.14.0',