fix: replace golang/snappy with klauspost/compress/snappy

[oikarinen]

Summary

Replace github.com/golang/snappy with github.com/klauspost/compress/snappy throughout the codebase. This change updates all import statements, dependency declarations, and license notices to use the klauspost implementation of Snappy compression.

Background & Motivation

The original golang/snappy package has been archived and is no longer actively maintained. The klauspost/compress library provides a drop-in replacement with the same API that is:

• Actively maintained - Regular updates and bug fixes
• API compatible - No code changes required beyond import paths
• Performance improvements - Generally faster than the original implementation
• Part of a comprehensive compression library - We already use klauspost/compress for zstd compression

This change eliminates our dependency on an archived package and consolidates our compression dependencies under a single, well-maintained library.

Changes Made

Source Code

• Updated imports in x/mongo/driver/compression.go
• Updated imports in x/mongo/driver/compression_test.go
• Updated imports in x/mongo/driver/testdata/compression.go

Dependencies

• Removed github.com/golang/snappy v1.0.0 from go.mod
• Updated all submodule go.mod files via go mod tidy
• Fixed replace directive in internal/test/goleak/go.mod to properly reference v2 module path

Documentation

• Removed github.com/golang/snappy license notice from THIRD-PARTY-NOTICES
• Kept existing github.com/klauspost/compress/snappy license notice

Testing

• All existing compression tests pass without modification
• go build ./... succeeds across all packages
• Compression functionality verified with snappy, zlib, and zstd compressors

[Copilot]

Pull request overview

This PR replaces the archived github.com/golang/snappy package with the actively maintained github.com/klauspost/compress/snappy library. The change is a straightforward dependency migration that requires only import path updates, as both packages provide API-compatible implementations of Snappy compression.

Key Changes:

• Updated all import statements from github.com/golang/snappy to github.com/klauspost/compress/snappy
• Removed github.com/golang/snappy v1.0.0 from all go.mod files via go mod tidy
• Fixed module path replace directive in internal/test/goleak/go.mod to use v2 path
• Removed github.com/golang/snappy license notice from THIRD-PARTY-NOTICES

Reviewed changes

Copilot reviewed 12 out of 20 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
x/mongo/driver/compression.go	Updated snappy import to klauspost implementation
x/mongo/driver/compression_test.go	Updated snappy import in test file
x/mongo/driver/testdata/compression.go	Updated snappy import in test data file
go.mod	Removed golang/snappy dependency from main module
internal/test/goleak/go.mod	Fixed v2 module path in replace directive and removed golang/snappy indirect dependency
internal/cmd/benchmark/go.mod	Removed golang/snappy indirect dependency
internal/cmd/compilecheck/go.mod	Removed golang/snappy indirect dependency
internal/cmd/faas/awslambda/mongodb/go.mod	Removed golang/snappy indirect dependency
examples/_logger/logrus/go.mod	Removed golang/snappy indirect dependency
examples/_logger/zap/go.mod	Removed golang/snappy indirect dependency
examples/_logger/zerolog/go.mod	Removed golang/snappy indirect dependency
THIRD-PARTY-NOTICES	Removed license notice for archived golang/snappy package

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.