Add CMSSW_15_1_0_pre4 for el8_aarch64_gcc12 (non-production arch) as Development release.

Author: cmsbuild

releases.map

@@ -4656,3 +4656,4 @@ architecture=el8_amd64_gcc12;label=CMSSW_15_0_9;type=Production;state=Announced;
 architecture=el9_amd64_gcc12;label=CMSSW_15_0_9;type=Production;state=Announced;prodarch=0;default_micro_arch=x86-64-v3;
 architecture=el9_aarch64_gcc12;label=CMSSW_15_1_0_pre4;type=Development;state=Announced;prodarch=0;
 architecture=el9_amd64_gcc12;label=CMSSW_15_1_0_pre4;type=Development;state=Announced;prodarch=0;default_micro_arch=x86-64-v3;
+architecture=el8_aarch64_gcc12;label=CMSSW_15_1_0_pre4;type=Development;state=Announced;prodarch=0;