fontconfig: depends on gperf from v2.12.1

testing/packages/fontconfig/package.py

@@ -21,7 +21,7 @@ class Fontconfig(AutotoolsPackage):
     version("2.11.1", sha256="b6b066c7dce3f436fdc0dfbae9d36122b38094f4f53bd8dffd45e195b0540d8d")
 
     depends_on("freetype")
-    depends_on("gperf", type="build", when="@2.12.2:")
+    depends_on("gperf", type="build", when="@2.12.1:")
     depends_on("libxml2")
     depends_on("pkgconfig", type="build")
     depends_on("font-util")