Bump protobuf from 3.6.1 to 3.18.3 in /okmovieSpider

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.6.1 to 3.18.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](protocolbuffers/protobuf@v3.6.1...v3.18.3)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-type: direct:production
...

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

Author: dependabot[bot]

okmovieSpider/requirements.txt

@@ -17,7 +17,7 @@ MarkupSafe==1.0
 maxminddb==1.4.1
 mysql-connector-python==8.0.13
 post==1.0.2
-protobuf==3.6.1
+protobuf==3.18.3
 psutil==5.4.7
 public==1.0.3
 pycparser==2.19