Update dependency @types/jest to v26

[xcomponentadmin]

This PR contains the following updates:

Package	Type	Update	Change	References
@types/jest	dependencies	major	^23.0.0 -> ^26.0.0	source

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Renovate configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Renovate will not automatically rebase this PR, because other commits have been found.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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This PR has been generated by Renovate Bot.

[xcomponentadmin]

⚠️ Lock file problem

Renovate failed to update a lock file. You probably do not want to merge this PR as-is.

♻️ Renovate will retry this branch, including lockfile, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The lock file failure details are included below:

yarn.lock

error An unexpected error occurred: "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000758.tgz: ESOCKETTIMEDOUT".
Process stalled
Active handles:
  - Socket
  - Socket
  - Socket
  - TLSSocket
  - TLSSocket
  - TLSSocket

[xcomponentadmin]

Autoclosing Skipped

This PR has been flagged for autoclosing, however it is being skipped due to the branch being already modified. Please close/delete it manually or report a bug if you think this is in error.