Add community meeting reference to README

[nscuro]

Description

Adds community meeting reference to README.

Addressed Issue

N/A

Additional Details

N/A

Checklist

• I have read and understand the contributing guidelines
• This PR fixes a defect, and I have provided tests to verify that the fix is effective
• This PR implements an enhancement, and I have provided tests to verify that it works as intended
• This PR introduces changes to the database model, and I have updated the migration changelog accordingly
• This PR introduces new or alters existing behavior, and I have updated the documentation accordingly
• This PR is a substantial change (per the ADR criteria), and I have added an ADR under docs/adr/

[owasp-dt-bot]

✅ Snyk checks have passed. No issues have been found so far.

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✅	Open Source Security	0	0	0	0	0 issues

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[Copilot]

Pull request overview

Adds a “Community” section to the project README to direct contributors/users to the Dependency-Track monthly community meeting information.

Changes:

• Introduces a new “## Community” section in README.md.
• Links to the Dependency-Track community meetings page in the DependencyTrack/community repository.

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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