ci: set build parallel level for hatch based tests (#10427)

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hatch.toml

@@ -185,6 +185,9 @@ dependencies = [
     "django{matrix:django}"
 ]
 
+[envs.appsec_threats_django.env-vars]
+CMAKE_BUILD_PARALLEL_LEVEL = "12"
+
 [envs.appsec_threats_django.scripts]
 test = [
     "uname -a",
@@ -230,6 +233,9 @@ dependencies = [
     "flask{matrix:flask}"
 ]
 
+[envs.appsec_threats_flask.env-vars]
+CMAKE_BUILD_PARALLEL_LEVEL = "12"
+
 [envs.appsec_threats_flask.scripts]
 test = [
     "uname -a",
@@ -272,6 +278,9 @@ dependencies = [
     "fastapi{matrix:fastapi}"
 ]
 
+[envs.appsec_threats_fastapi.env-vars]
+CMAKE_BUILD_PARALLEL_LEVEL = "12"
+
 [envs.appsec_threats_fastapi.scripts]
 test = [
     "uname -a",