[Backport releases/v0.20] juggler: gaudi@36: when @2: (#589)

# Description
Backport of #588 to `releases/v0.20`.

Co-authored-by: Wouter Deconinck <wdconinc@gmail.com>

packages/juggler/package.py

@@ -149,7 +149,7 @@ class Juggler(CMakePackage):
     depends_on("tensorflow-lite")
 
     depends_on("gaudi", when="@master")
-    depends_on("gaudi@36", when="@2:")
+    depends_on("gaudi@36:", when="@2:")
     depends_on("gaudi@33:34", when="@:1.8")
 
     depends_on("acts +identification +json +tgeo +dd4hep")