Merge pull request #21 from MarkusRosen/dependabot/pip/protobuf-3.18.3

Bump protobuf from 3.15.0 to 3.18.3

Author: MarkusRosen

requirements.txt

@@ -37,7 +37,7 @@ Pillow==9.0.1
 pio==0.0.3
 prometheus-client==0.8.0
 prometheus-flask-exporter==0.15.0
-protobuf==3.15.0
+protobuf==3.18.3
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycparser==2.20