chore(deps): update weblate/dev docker tag to v2026.19.0 (#4505) #15907

Job	Run time
ci / revisions	3s
ci / build / Build, stable, amd64	5m 4s
ci / buildx / Build, stable, arm64	4m 48s
ci / Merge images, stable	1m 43s
ci / Trivy Container Scan	3m 8s
ci / Anchore Container Scan	2m 39s
ci / test-anubis / Test container anubis, stable	8m 31s
ci / test-saml / Test container saml, stable	7m 51s
ci / test-split / Test container split, stable	8m 31s
ci / test-localtime / Test container localtime, stable	8m 27s
ci / test-ssl / Test container basic, stable	10m 47s
ci / test-basic / Test container basic, stable	8m 47s
ci / test-novolume / Test container read-write, stable	8m 13s
ci / test-single-celery / Test container celery-single, stable	7m 50s
ci / Lint, stable	3s
ci / Tests, stable	3s
ci / Publish to GitHub, stable	3m 28s
ci / Publish to Docker Hub, stable	1m 54s
Create release on GitHub	0s
	1h 31m 50s

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