Merge pull request #40 from zlsh80826/dependabot/pip/protobuf-3.18.3

Bump protobuf from 3.6.1 to 3.18.3

Author: zlsh80826

requirements.txt

@@ -106,7 +106,7 @@ ply==3.11
 preshed==2.0.1
 prometheus-client==0.5.0
 prompt-toolkit==2.0.7
-protobuf==3.6.1
+protobuf==3.18.3
 psutil==5.4.7
 psycopg2==2.7.4
 ptyprocess==0.6.0