v6.9.0

What's Changed

• feat: initialize credentials from Configuration by @Tr00d in #491
• feat: add versioning on Meetings API Uri by @Tr00d in #497
• fix: version substring in release pipeline by @Tr00d in #503
• refactor: update error status codes in PBT for VonageClient by @Tr00d in #494
• refactor: configuration improvement by @Tr00d in #495
• refactor: extend regex timeout by @Tr00d in #498
• refactor: remove InternalsVisibleTo property by @Tr00d in #501
• ci: pipelines permissions by @Tr00d in #487
• ci: release by @Tr00d in #488
• ci: pipeline permissions by @Tr00d in #489
• ci: add .editorconfig to solution by @Tr00d in #493
• ci: add pre-commit-config by @Tr00d in #496
• ci: release pipeline by @Tr00d in #500
• release: v6.9.0 by @Tr00d in #502
• doc: changelog update by @Tr00d in #490
• doc: readme update by @Tr00d in #499

Full Changelog: v6.8.0...v6.9.0