Add CMSSW_15_0_4 for el9_amd64_gcc12 (non-production arch) as Production release.

Author: cmsbuild

Diff for: releases.map

@@ -4593,3 +4593,4 @@ architecture=el9_aarch64_gcc12;label=CMSSW_15_0_4;type=Production;state=Announce
 architecture=el8_aarch64_gcc12;label=CMSSW_15_0_4;type=Production;state=Announced;prodarch=0;
 architecture=el8_amd64_gcc12;label=CMSSW_15_0_4;type=Production;state=Announced;prodarch=1;default_micro_arch=x86-64-v3;
 architecture=el8_amd64_gcc13;label=CMSSW_15_0_4;type=Production;state=Announced;prodarch=0;default_micro_arch=x86-64-v3;
+architecture=el9_amd64_gcc12;label=CMSSW_15_0_4;type=Production;state=Announced;prodarch=0;default_micro_arch=x86-64-v3;