[Snyk] Security upgrade ruby from 2.6.5 to 2.7.8

[mgulter]

Snyk has created this PR to fix 2 vulnerabilities in the dockerfile dependencies of this project.

Keeping your Docker base image up-to-date means you’ll benefit from security fixes in the latest version of your chosen image.

Snyk changed the following file(s):

• openshift-configs/Dockerfile

We recommend upgrading to ruby:2.7.8, as this image has only 401 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Out-of-bounds Write SNYK-DEBIAN10-LIBWEBP-5893093	829
	Out-of-bounds Write SNYK-DEBIAN10-LIBWEBP-5893093	829
	Out-of-bounds Write SNYK-DEBIAN10-LIBWEBP-5893093	829
	Out-of-bounds Write SNYK-DEBIAN10-LIBWEBP-5893093	829
	CVE-2023-44487 SNYK-DEBIAN10-NGHTTP2-5953390	829

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• Check the changes in this PR to ensure they won't cause issues with your project.
• Max score is 1000. Note that the real score may have changed since the PR was raised.
• This PR was automatically created by Snyk using the credentials of a real user.

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