Update Helm release redash to v3.2.1

[renovate]

This PR contains the following updates:

Package	Update	Change
redash (source)	minor	3.0.0 → 3.2.1

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Release Notes

getredash/contrib-helm-chart (redash)

v3.2.1

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Redash is an open source tool built for teams to query, visualize and collaborate.

v3.2.0

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• Upgrade Redash from v24.04.0-dev to v25.8.0 (latest stable)
• Update default image repository from redash/preview to redash/redash for stable releases
• Upgrade PostgreSQL dependency from ^15.2.0 to ^18.2.0 (latest: 18.2.4)
• Upgrade Redis dependency from ^19.1.0 to ^24.1.0 (latest: 24.1.3)
• NEW: Added optional automatic PostgreSQL migration hooks for major version upgrades (15→18)
  • Enable with postgresqlMigration.enabled: true and configure a PVC for storage
  • See README for details
• See upgrade notes in README

CRITICAL Upgrade Notes:

• Always backup your PostgreSQL database before upgrading
• Redash schema migrations will run automatically via Helm hooks (handles Redash app schema changes)
• PostgreSQL version upgrade (15→18):
  • Option 1: Enable automatic migration hooks (requires PVC) - see README
  • Option 2: Manual migration using pg_dump/pg_restore - see README
• PostgreSQL 15 → 18 is a major version jump requiring data migration
• Redis 19 → 24 upgrade should be automatic, but test thoroughly
• Test in staging environment first, especially if upgrading from v24.x
• Review Bitnami PostgreSQL and Redis chart changelogs for breaking changes

v3.0.1

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• Change scheduler deployment strategy type to Recreate. (#​121)

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