v13.29.2

Updated cross-env and cross-spawn dependencies to avoid vulnerable versions. (#7979)
Fixed an issue with the Data Connect emulator where dataDir and --export were relative to the current directory insead of firebase.json.
init dataconnect now suggests DNS compatible service IDs.
Updated the Firebase Data Connect local toolkit to v1.7.6, which includes several bug fixes:
- Fixed an issue in generated Dart code when an operation name ends in a number
- Fixed an issue with @check and @redact directives on list fields
- Fixed an issue with null literals in any type fields

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