Release v0.19.3.0

[github-actions]

Note

This PR bumps the ElasticGraph version twice in two separate commits. The released version does not show
in the overall PR diff but is in the first commit. These two commits should not be squashed or rebased so
that the tagged commit lands as-is in the base branch.

• Confirm the release action succeeded before merging
• Confirm this version bump should be merged into pre-1.0 or change the base branch
• Review and edit the GitHub Draft Release (can be done after this PR is merged)

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