automation: Update docker-lemmy Docker tag to v0.19.5

This MR contains the following updates:

Package	Update	Change
docker-lemmy	patch	0.19.3 -> 0.19.5

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Release Notes

LemmyNet/lemmy

v0.19.5: Release

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Release notes

Full Changelog: https://github.com/LemmyNet/lemmy/compare/0.19.4...0.19.5

v0.19.4: Release

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Release notes

Full Changelog : 0.19.3...0.19.4

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