deps(patch): update dependency @cloudant/couchbackup to v2.11.19

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@cloudant/couchbackup	2.11.17 → 2.11.19

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Release Notes

IBM/couchbackup (@​cloudant/couchbackup)

v2.11.19

Compare Source

• [FIXED] Option validation to prevent [DEP0187] DeprecationWarning from fs.existsSync when invalid types are passed.
• [UPGRADED] @ibm-cloud/cloudant dependency to version 0.12.24.
• [UPGRADED] ibm-cloud-sdk-core peerDependency to version 5.5.0 to match version provided from @ibm-cloud/cloudant.

v2.11.18

Compare Source

• [UPGRADED] commander dependency to version 15.0.0.
• [UPGRADED] @ibm-cloud/cloudant dependency to version 0.12.22.
• [UPGRADED] ibm-cloud-sdk-core peerDependency to version 5.4.22 to match version provided from @ibm-cloud/cloudant.
• [UPGRADED] axios peerDependency to version 1.18.0 to match version provided from @ibm-cloud/cloudant.
• [NOTE] Updated minimum supported engine to Node.js 22 LTS.

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