refactor(sns): migrate sns governance to use ic_cdk (#1941)

This migrates sns governance to use ic_cdk instead of dfn_core

---------

Co-authored-by: Arshavir Ter-Gabrielyan <arshavir.ter.gabrielyan@dfinity.org>

rs/sns/governance/BUILD.bazel

@@ -32,8 +32,6 @@ DEPENDENCIES = [
     "//rs/protobuf",
     "//rs/rust_canisters/canister_log",
     "//rs/rust_canisters/canister_profiler",
-    "//rs/rust_canisters/dfn_candid",
-    "//rs/rust_canisters/dfn_core",
     "//rs/rust_canisters/http_types",
     "//rs/sns/governance/proposal_criticality",
     "//rs/sns/governance/proposals_amount_total_limit",
@@ -46,7 +44,9 @@ DEPENDENCIES = [
     "@crate_index//:candid",
     "@crate_index//:clap_3_2_25",
     "@crate_index//:comparable",
+    "@crate_index//:futures",
     "@crate_index//:hex",
+    "@crate_index//:ic-cdk",
     "@crate_index//:ic-metrics-encoder",
     "@crate_index//:lazy_static",
     "@crate_index//:maplit",
@@ -64,6 +64,7 @@ MACRO_DEPENDENCIES = [
     # Keep sorted.
     "//rs/nervous_system/common/build_metadata",
     "@crate_index//:async-trait",
+    "@crate_index//:ic-cdk-macros",
     "@crate_index//:rust_decimal_macros",
     "@crate_index//:strum_macros",
 ]
@@ -86,7 +87,6 @@ DEV_DEPENDENCIES = [
     "//rs/test_utilities/types",
     "@crate_index//:assert_matches",
     "@crate_index//:candid_parser",
-    "@crate_index//:futures",
     "@crate_index//:pretty_assertions",
     "@crate_index//:proptest",
     "@crate_index//:tempfile",

rs/sns/governance/Cargo.toml

@@ -33,10 +33,11 @@ base64 = { workspace = true }
 candid = { workspace = true }
 clap = { version = "3.2.25", features = ["derive"] }
 comparable = { version = "0.5", features = ["derive"] }
-dfn_candid = { path = "../../rust_canisters/dfn_candid" }
-dfn_core = { path = "../../rust_canisters/dfn_core" }
 hex = { workspace = true }
+futures = { workspace = true }
 ic-base-types = { path = "../../types/base_types" }
+ic-cdk = { workspace = true }
+ic-cdk-macros = { workspace = true }
 ic-canisters-http-types = { path = "../../rust_canisters/http_types" }
 ic-canister-log = { path = "../../rust_canisters/canister_log" }
 ic-canister-profiler = { path = "../../rust_canisters/canister_profiler" }