Upgrade buildx from 0.18.0 to 0.19.3 (critical CVE)

[MPV]

What

Includes:

• https://github.com/docker/buildx/releases/tag/v0.19.0
• https://github.com/docker/buildx/releases/tag/v0.19.1
• https://github.com/docker/buildx/releases/tag/v0.19.2
• https://github.com/docker/buildx/releases/tag/v0.19.3

Why

0.19.2 should alleviate (critical):

• CVE-2024-45337
• GHSA-v778-237x-gjrc

0.19.3 should alleviate (high):

• CVE-2024-45338
• GHSA-w32m-9786-jp63

...as described for example in:

• https://github.com/wolfi-dev/advisories/blob/63aee473bdd47f1df149e1b94cee34db7c8a7db1/docker-cli-buildx.advisories.yaml

[MPV]

Related:

• Upgrade docker from 27.3.1 to 27.4.1 #3648