test: ignore julia GC test on pre-1.10

Author: MilesCranmer

test/GC.jl

@@ -5,7 +5,9 @@
             finalize(obj)
         end
     end
-    Threads.nthreads() > 1 && @test !isempty(PythonCall.GC.QUEUE.items)
+    Threads.nthreads() > 1 &&
+        VERSION >= v"1.10.0-" &&
+        @test !isempty(PythonCall.GC.QUEUE.items)
     PythonCall.GC.gc()
     @test isempty(PythonCall.GC.QUEUE.items)
 end
@@ -17,7 +19,9 @@ end
             finalize(obj)
         end
     end
-    Threads.nthreads() > 1 && @test !isempty(PythonCall.GC.QUEUE.items)
+    Threads.nthreads() > 1 &&
+        VERSION >= v"1.10.0-" &&
+        @test !isempty(PythonCall.GC.QUEUE.items)
     GC.gc()
     @test isempty(PythonCall.GC.QUEUE.items)
 end