fix(deps): update dependency db-migrate to v0.11.5

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
db-migrate	dependencies	patch	0.11.4 -> 0.11.5	source

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Release Notes

db-migrate/node-db-migrate

### [`v0.11.5`](https://renovatebot.com/gh/db-migrate/node-db-migrate/blob/master/CHANGELOG.md#​0115httpsgithubcomdb-migratenode-db-migratecomparev0114v0115-2019-01-06) [Compare Source](https://renovatebot.com/gh/db-migrate/node-db-migrate/compare/v0.11.4...v0.11.5) ##### Bug Fixes - **db:** set exit code as 1 only on error ([3148cc9](https://renovatebot.com/gh/db-migrate/node-db-migrate/commit/3148cc9)) - Added warning on plugin loading failure ([fcffd62](https://renovatebot.com/gh/db-migrate/node-db-migrate/commit/fcffd62)) - **lgtm:** fix errors ([4cd5558](https://renovatebot.com/gh/db-migrate/node-db-migrate/commit/4cd5558))

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