fix snip20 interface feature

before, the query_auth_impl feature was being included, which brought in unnecessary (and troublesome) dependencies.

packages/shade_protocol/Cargo.toml

@@ -77,7 +77,7 @@ treasury_manager = ["adapter"]
 # lp_shdswap       = ["interface"]
 adapter          = ["interface"]
 manager          = ["interface"]
-snip20           = ["query_auth_impl", "dep:base64"]
+snip20           = ["interface", "dep:base64"]
 query_auth       = ["interface", "query_auth_lib", "dep:remain"]
 snip20_staking   = ["interface", "implementation"]
 sky              = ["snip20", "dex", "dao"]