Bump prometheus-client from 0.17.1 to 0.19.0

Bumps [prometheus-client](https://github.com/prometheus/client_python) from 0.17.1 to 0.19.0.
- [Release notes](https://github.com/prometheus/client_python/releases)
- [Commits](prometheus/client_python@v0.17.1...v0.19.0)

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

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

requirements.txt

@@ -5,4 +5,4 @@ sqlalchemy==2.0.4
 structlog==23.2.0
 colorama==0.4.6
 pika==1.3.2
-prometheus-client==0.17.1
+prometheus-client==0.19.0

setup.py

@@ -36,7 +36,7 @@
         "structlog >= 20.2.0, < 24.0.0",
         "colorama >= 0.4.4, < 1.0.0",
         "pika >= 1.3.1, < 2.0.0",
-        "prometheus-client >= 0.17.1, < 0.18.0",
+        "prometheus-client >= 0.17.1, < 0.20.0",
     ],
     extras_require={
         "amazon": ["boto3 >= 1.11.9, <2.0.0"],