Bump paramiko from 2.10.1 to 3.4.0 in /tools/validation-tool

Bumps [paramiko](https://github.com/paramiko/paramiko) from 2.10.1 to 3.4.0.
- [Commits](paramiko/paramiko@2.10.1...3.4.0)

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

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

tools/validation-tool/requirements.txt

@@ -2,4 +2,4 @@ appJar==0.94.0
 json5==0.9.5
 pandas==0.25.1
 scp==0.13.3
-paramiko==2.10.1
+paramiko==3.4.0