test: Downgrade 'jest' to v25, to maintain Node.js v8 support

chore: Release v3.0.0

chore: Release v2.4.3

chore: Release v2.4.2

ci: Fix tag command

Merge pull request serverless#194 from serverless/releasing-2-4-0

Releasing v2.4.0

Merge pull request serverless#182 from serverless/releasing-2-3-3

Releasing v2.3.3

Merge pull request serverless#144 from serverless/releasing-2-3-2

Releasing v2.3.2

Merge pull request serverless#141 from serverless/releasing-2-3-1

Releasing v2.3.1

Merge pull request serverless#139 from serverless/releasing-2-3-0

Releasing v2.3.0