Add bigquery support

[0xRobin]

No description provided.

[cursor]

PR Summary

Medium Risk
Adds a new BigQuery SQL driver (via a forked gorm.io/driver/bigquery) and upgrades the Go toolchain/dependencies, which can affect build/runtime behavior and increase binary size.

Overview
Adds BigQuery support by including the gorm.io/driver/bigquery/driver in the generated driver set and documenting BigQuery DSN/auth usage (including optional per-query reservation selection).

Updates build and examples to match: new BigQuery example configs/collector files, documentation/sql_exporter.yml BigQuery DSN comments, and a Dockerfile path tweak for the duneanalytics/sql_exporter repo layout.

Bumps the module to Go 1.24.7 and refreshes a large set of dependencies (AWS/Databricks/Snowflake/Trino plus new Google Cloud libs), with a replace to a forked BigQuery driver (github.com/duneanalytics/bigquery).

^{Written by Cursor Bugbot for commit f970017. Configure here.}

[0xRobin]

Has been running well since yesterday, going to merge this in.