Update generated requirements.txt to resolve Dependabot alerts

[ihalatci]

Summary

This PR updates generated requirements.txt files in CircleCI images to resolve currently open Dependabot alerts.

Files updated:

• circleci/images/citusupgradetester/files/etc/requirements.txt
• circleci/images/failtester/files/etc/requirements.txt
• circleci/images/pgupgradetester/files/etc/requirements.txt
• circleci/images/stylechecker/files/etc/requirements.txt

How these were generated

As documented in each requirements file:

• base images: generated with pipenv requirements from Citus src/test/regress/Pipfile.lock
• stylechecker: generated with pipenv requirements --dev from the same lockfile

Source lockfile basis used: citusdata/citus src/test/regress/Pipfile.lock from PR #8488.

Security-relevant updates in all 4 files

• cryptography: 44.0.3 -> 46.0.5
• Werkzeug: 3.1.4 -> 3.1.5
• filelock: 3.20.2 -> 3.25.0
• pyasn1: 0.6.1 -> 0.6.2

Dependabot alerts addressed

Closes alerts: #186, #187, #188, #189, #190, #191, #192, #193, #194, #195, #196, #197, #198, #199, #200, #201.

[ihalatci]

Supersedes Dependabot PRs #187, #188, #189, #190, #191, and #192 with one consolidated requirements refresh.