unconditionally run test_keystore (#6033)

tests/all_tests.nim

@@ -34,6 +34,7 @@ import # Unit test
   ./test_gossip_validation,
   ./test_helpers,
   ./test_honest_validator,
+  ./test_keystore,
   ./test_key_splitting,
   ./test_light_client_processor,
   ./test_light_client,
@@ -60,7 +61,6 @@ import # Unit test
 when not defined(i386):
   # Avoids "Out of memory" CI failures
   import
-    ./test_keystore,
     ./test_keystore_management
 
   when not defined(windows):