chore: update lerna monorepo to v3.15.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@lerna/project	devDependencies	minor	3.13.1 -> 3.15.0
lerna	devDependencies	minor	3.14.1 -> 3.15.0

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Release Notes

lerna/lerna

v3.15.0

Compare Source

Bug Fixes

• deps: Consume forked npm libs (bdd4fa1)

Features

• version: Add --create-release=[gitlab|github] option (#​2073) (4974b78)

3.14.2 (2019-06-09)

Bug Fixes

• bootstrap: Respect --force-local option (#​2104) (c2fb639)
• child-process: Ensure adjacent prefixes are always a different color (5a10146)
• npm-publish: Use generated manifest when publishing subdirectory (b922766), closes #​2113
• publish: Allow per-leaf subdirectory publishing (ea861d9), closes #​2109
• version: Remove unused dependency (285bd7e)

3.14.1 (2019-05-15)

Bug Fixes

• collect-uncommitted: Call git with correct arguments, test properly (551e6e4), closes #​2091

v3.14.2

Compare Source

Bug Fixes

• deps: Consume forked npm libs (bdd4fa1)

Features

• version: Add --create-release=[gitlab|github] option (#​2073) (4974b78)

3.14.2 (2019-06-09)

Bug Fixes

• bootstrap: Respect --force-local option (#​2104) (c2fb639)
• child-process: Ensure adjacent prefixes are always a different color (5a10146)
• npm-publish: Use generated manifest when publishing subdirectory (b922766), closes #​2113
• publish: Allow per-leaf subdirectory publishing (ea861d9), closes #​2109
• version: Remove unused dependency (285bd7e)

3.14.1 (2019-05-15)

Bug Fixes

• collect-uncommitted: Call git with correct arguments, test properly (551e6e4), closes #​2091

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