chore: upgrade ghcr.io/eclipse/openvsx-server image and depended tools

[svor]

What does this PR do?

• Updates openvsx image to use more freshest openvsx-server in the embedded plugin registry;
• Upgrades postgresql to 15 version
• Upgrade java to 17 version
• Upgrades ovsx to 0.8.2 version

Screenshot/screencast of this PR

What issues does this PR fix or reference?

eclipse-che/che#22247

How to test this PR?

• Deploy che
• Update eclipse-che CR to use internal plugin registry with custom image:

    pluginRegistry:
      deployment:
        containers:
          - image: 'quay.io/vsvydenk/che-plugin-registry:13'
      openVSXURL: ''

• Start any workspace and check that plugins are available in the Plugins view and it's possible to install them:
  

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[github-actions]

Click here to review and test in web IDE:

[vinokurig]

Tested with the provided steps.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: ibuziuk, svor, vinokurig

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[ScrewTSW]

Verified against https://eclipse-che.apps.ocp412-tdancs.crw-qe.com/