Update to BouncyCastle library to 1.69

[jtnord]

This change also promotes the transitive dependencies (one new one) to
direct dependencies as it is the job of this plugin to provide them and
it removes the warning about bundling transitive dependencies.

obsoletes #38

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[Wadeck]

Seems fine but no write permission at the moment to merge :)

[batmat]

@Wadeck I'm going to add you given you're already declared as an authorized releaser
https://github.com/jenkins-infra/repository-permissions-updater/blob/ca9182c78192149ccc9944ff532e93e040814d41/permissions/plugin-bouncycastle-api.yml#L13