feat: add bigint to is_numeric_dtype

[jomach]

This allows the profiler to run against dbt-spark / dbt-databricks profiler

Description & motivation

add bigint to is_numeric_dtype

Checklist

• [x] I have verified that these changes work locally on the following warehouses (Note: it's okay if you do not have access to all warehouses, this helps us understand what has been covered):
  • [ ] Postgres
  • [ ] BigQuery
  • [ ] Snowflake
  • [ ] Redshift
  • [ ] SQL Server
  • [x] Databricks
• [ ] I have written tests for new macros (either as dbt schema tests in integration_tests/models, dbt data tests in integration_tests/tests or integration tests in the CI workflow)
• [ ] I have updated the README.md (if applicable)

[owenprough-sift]

These changes will also get this package closer to working on Athena/Presto/Trino.

[stumelius]

@jomach Everything looks good here! Thanks for your contribution :)