chore(example/deps): update dependency cloud_firestore to v6.1.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
cloud_firestore (source)	dependencies	patch	6.1.0 → 6.1.2

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Release Notes

firebase/flutterfire (cloud_firestore)

v6.1.2

Compare Source

• FIX(firestore,android): avoid ConcurrentModificationException by collecting Firestore instances before termination (#​17956). (f94bbd68)

v6.1.1

Compare Source

• Update a dependency to the latest release.

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Configuration

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• If you want to rebase/retry this PR, check this box

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[renovate]

⚠️ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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

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

The artifact failure details are included below:

File name: example/pubspec.lock

Command failed: flutter pub upgrade cloud_firestore
Because every version of firestore_cache from path depends on cloud_firestore 6.1.0 and firestore_cache_example depends on cloud_firestore 6.1.2, firestore_cache from path is forbidden.
So, because firestore_cache_example depends on firestore_cache from path, version solving failed.


You can try the following suggestion to make the pubspec resolve:
* Consider downgrading your constraint on cloud_firestore: flutter pub add cloud_firestore:^6.1.0
Failed to update packages.