Have Renovate ignore auth demo projects

[hsubox76]

Use https://docs.renovatebot.com/configuration-options/#ignorepaths to have Renovate ignore auth demo projects. If these need to be regularly updated, we should add a process to do it on release. If they only need to be updated whenever someone decides to use them, they can be updated then. We don't do Renovate updates on a regular schedule so it's a solution that doesn't really fit either case.

[changeset-bot]

⚠️ No Changeset found

Latest commit: f108cef

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[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (9e9ee7b) and merge commit (cf0b6d5).

Test Logs

• Base (9e9ee7b): https://github.com/firebase/firebase-js-sdk/actions/runs/3372974138
• Merge (cf0b6d5): https://github.com/firebase/firebase-js-sdk/actions/runs/3373384824

1. https://storage.googleapis.com/firebase-sdk-metric-reports/SQUglqAgvf.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (9e9ee7b) and merge commit (cf0b6d5).

Test Logs

• Base (9e9ee7b): https://github.com/firebase/firebase-js-sdk/actions/runs/3372974138
• Merge (cf0b6d5): https://github.com/firebase/firebase-js-sdk/actions/runs/3373384824

1. https://storage.googleapis.com/firebase-sdk-metric-reports/D8WdTWWUgv.html

[dwyfrequency]

LGTM