[Snyk] Security upgrade redhat/ubi8-minimal from latest to 8.9-1108

[it-percona]

This PR was automatically created by Snyk using the credentials of a real user.

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

Changes included in this PR

• proxysql/Dockerfile

We recommend upgrading to redhat/ubi8-minimal:8.9-1108, as this image has only 88 known vulnerabilities. To do this, merge this pull request, then verify your application still works as expected.

Some of the most important vulnerabilities in your base image include:

Severity	Priority Score / 1000	Issue	Exploit Maturity
	514	Memory Leak SNYK-RHEL8-LIBCAP-5660406	No Known Exploit
	514	Integer Overflow or Wraparound SNYK-RHEL8-LIBCAP-5660413	No Known Exploit
	364	Resource Exhaustion SNYK-RHEL8-OPENSSLLIBS-5804834	No Known Exploit
	371	Heap-based Buffer Overflow SNYK-RHEL8-SQLITELIBS-6140699	No Known Exploit
	371	Man-in-the-Middle (MitM) SNYK-RHEL8-SYSTEMDLIBS-6137227	No Known Exploit

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🦉 Memory Leak
🦉 Resource Exhaustion

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