ci: add modernize linter

[PascalBourdier]

follow linter advice with:

golangci-lint run --fix

[Copilot]

Pull request overview

This PR adds the modernize linter to the golangci-lint configuration and applies its recommendations throughout the codebase. The modernize linter suggests using modern Go idioms that are available in Go 1.22+ (the project uses Go 1.24.0).

Key changes:

• Enabled the modernize linter in .golangci.yml
• Replaced interface{} with any alias throughout the codebase for better readability
• Removed unnecessary range variable captures (automatic in Go 1.22+)
• Replaced sort.Slice with more efficient slices.Sort
• Updated benchmark loops to use b.Loop() method
• Simplified loop syntax using for i := range n pattern

Reviewed changes

Copilot reviewed 19 out of 19 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
.golangci.yml	Added modernize linter to the enabled linters list
testing/testing.go	Removed unnecessary range variable capture comment and code
dktesting/dktesting.go	Removed unnecessary range variable capture comment and code
source/stub/stub.go	Replaced interface{} with any in struct field and function parameter
source/migration.go	Replaced sort.Slice with slices.Sort and added slices import
source/go_bindata/go-bindata.go	Replaced interface{} with any in function parameter
source/file/file_test.go	Simplified loop syntax to for i := range 1000, replaced benchmark loops with b.Loop()
migrate.go	Replaced interface{} with any in channel types and function parameters
migrate_test.go	Replaced interface{} with any in channel type and simplified loop syntax
log.go	Replaced interface{} with any in Logger interface method signature
internal/cli/log.go	Replaced interface{} with any in Log method signatures
database/stub/stub.go	Replaced interface{} with any in struct field and function parameter
database/spanner/spanner.go	Replaced interface{} with any in slice literal
database/rqlite/rqlite.go	Replaced interface{} with any in slice literal
database/postgres/postgres_test.go	Simplified loop syntax to for i := range concurrency
database/pgx/v5/pgx_test.go	Simplified loop syntax to for i := range concurrency
database/pgx/pgx_test.go	Simplified loop syntax to for i := range concurrency
database/neo4j/neo4j.go	Replaced interface{} with any in function signatures and map types
database/driver_test.go	Replaced interface{} with any in variable declaration

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