Bump jackson-core from 2.13.3 to 2.13.4

Bumps jackson-core from 2.13.3 to 2.13.4.

Commits

• e9598e5 [maven-release-plugin] prepare release jackson-core-2.13.4
• 3dfa1a6 Prepare for 2.13.4 release
• 7c0b6b6 Enable Dependabot for Github actions
• 1d577a4 Add SECURITY.md (copied from jackson-databind)
• 7e64617 Sync 2.13 branch workflow action from 2.14
• 80d4776 Negative number issue (2.13 branch - tests only) (#781)
• 7f64092 Merge branch '2.12' into 2.13
• 93e18c6 [maven-release-plugin] prepare for next development iteration
• e11142e [maven-release-plugin] prepare release jackson-core-2.12.7
• c8eec46 Prepare for 2.12.7 release
• Additional commits viewable in compare view

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