Update dependency renovate to ^19.231.8

This MR contains the following updates:

Package	Type	Update	Change
renovate (source)	dependencies	patch	^19.231.4 -> ^19.231.8

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

renovatebot/renovate

v19.231.8

Compare Source

19.231.8 (2020-05-06)

Bug Fixes

• worker: fix github endpoint for changelog (#​6145) (e795115)

v19.231.7

Compare Source

19.231.7 (2020-05-06)

Bug Fixes

• ensure baseBranchSha is set (dde7d31)
• Revert "fix(worker): fix github endpoint for changelog (#​6143)" (8eb8bae)

v19.231.6

Compare Source

19.231.6 (2020-05-06)

Bug Fixes

• worker: fix github endpoint for changelog (#​6143) (787e6bc)

v19.231.5

Compare Source

19.231.5 (2020-05-06)

Bug Fixes

• pypi: skip compatibility check if not a version (3f14af3), closes #​6142

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This MR has been generated by Renovate Bot.