chore: update transitive Arrow dependencies

Flux directly depends on Arrow v7, and transitively on:

Arrow v11 through BigQuery 1.50.0
Arrow v0.0.0-20211112161151-bc219186db40 through gosnowflake 1.6.9

In this change, the indirect arrow dependencies are both updated to v15 by updating:

BigQuery to v1.61.0
gosnowflake to v1.9.0

After this change, Flux only depends on Arrow v7 directly, and v15 indirectly.

Dear Author :wave:, the following checks should be completed (or explicitly dismissed) before merging.

[ ] ✏️ Write a PR description, regardless of triviality, to include the value of this PR
[ ] 🔗 Reference related issues
[ ] 🏃 Test cases are included to exercise the new code
[ ] 🧪 If new packages are being introduced to stdlib, link to Working Group discussion notes and ensure it lands under experimental/
[ ] 📖 If language features are changing, ensure docs/Spec.md has been updated

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influxdata / flux