test(test-plugin-ledger-connector-besu): jestify v21-sign-transaction-endpoint

[aldousalvarez]

Commit to be reviewed

test(test-plugin-ledger-connector-besu): jestify v21-sign-transaction-endpoint

Primary Changes
----------------
packages/cactus-test-plugin-ledger-connector-besu/src/test/typescript/
integration/plugin-validator-besu/v21-sign-transaction-endpoint.test.ts

Fixes #3565

Pull Request Requirements

• [x] Rebased onto upstream/main branch and squashed into single commit to help maintainers review it more efficient and to avoid spaghetti git commit graphs that obfuscate which commit did exactly what change, when and, why.
• [x] Have git sign off at the end of commit message to avoid being marked red. You can add -s flag when using git commit command. You may refer to this link for more information.
• [x] Follow the Commit Linting specification. You may refer to this link for more information.

Character Limit

• [x] Pull Request Title and Commit Subject must not exceed 72 characters (including spaces and special characters).
• [x] Commit Message per line must not exceed 80 characters (including spaces and special characters).

A Must Read for Beginners For rebasing and squashing, here's a must read guide for beginners.

[jagpreetsinghsasan]

PR-Commit Parity is failing to a known bug: https://github.com/hyperledger-cacti/cacti/issues/3557 (This workflow result can be skipped for evaluating PR for merge)

[aldousalvarez]

@outSH re-requested for review, already done with your requested changes. Thank you

[aldousalvarez]

@petermetz re-requested for review, already fixed the requested changes. The besu test packages are now passing. Thank you

[aldousalvarez]

@petermetz I have fixed the problem where the ctp-ledger-connector-besu is being skipped, and it is now passing. Re-requested for review. Thank you.