chore: tagRelease.sh: bump to 3.6.4 in release-1.6 branch [skip-build]

[rhdh-bot]

Signed-off-by: RHDH Build (rhdh-bot) rhdh-bot@redhat.com

[changeset-bot]

⚠️ No Changeset found

Latest commit: 2532ba6

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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