build(deps): bump pghero from 3.8.0 to 4.0.1

[dependabot]

Bumps pghero from 3.8.0 to 4.0.1.

Changelog

Sourced from pghero's changelog.

4.0.1 (2026-08-15)

• Added sequences from identity columns

4.0.0 (2026-08-05)

See the upgrade notes for Docker or Rails

• Reduced space for historical query stats
• Added disable_kill option to disable killing queries and connections
• Added unused_index_megabytes option to set minimum size for unused indexes
• Added copy button to explain visualize page
• Fixed error with unlogged sequences on replicas
• Dropped support for Postgres < 14
• Dropped support for pg_query < 6
• Dropped support for Sprockets < 4
• Dropped support for google-cloud-monitoring < 1
• Dropped support for system stats for Azure Database (Ruby SDK no longer supported)
• Dropped support for Ruby API
• Dropped support for Linux packages

Commits

• d202b2a Version bump to 4.0.1 [skip ci]
• d4b79db Improved test for sequences [skip ci]
• c3b9040 Improved regex [skip ci]
• d92bf7e Improved query for last values
• e4a9128 Improved naming [skip ci]
• 9fdb877 Removed comment [skip ci]
• 902fbc4 Fixed max_value for smallint columns [skip ci]
• 848f420 Improved query for sequences [skip ci]
• cfe5828 Improved tests for sequences [skip ci]
• 695f332 Improved tests for sequences
• Additional commits viewable in compare view