Bump scapy from 2.4.0 to 2.4.1 in /docs

Bumps [scapy](https://github.com/secdev/scapy) from 2.4.0 to 2.4.1.
- [Release notes](https://github.com/secdev/scapy/releases)
- [Commits](secdev/scapy@v2.4.0...v2.4.1)

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

Author: dependabot[bot]

docs/requirements.txt

@@ -178,7 +178,7 @@ requests-toolbelt==0.8.0
 retrying==1.3.3
 rope==0.14.0
 RTOC==2.1.0
-scapy==2.4.0
+scapy==2.4.1
 scapy-python3==0.26
 scikit-learn==0.19.1
 scipy==1.1.0