battery: Fix zbus dependency specification, and use tokio feature

Cargo.lock

@@ -3968,6 +3968,7 @@ dependencies = [
  "signal-hook-registry",
  "socket2",
  "tokio-macros",
+ "tracing",
  "windows-sys 0.42.0",
 ]
 
@@ -4803,6 +4804,7 @@ dependencies = [
  "futures-sink",
  "futures-util",
  "hex",
+ "lazy_static",
  "nix 0.25.1",
  "once_cell",
  "ordered-stream",
@@ -4811,6 +4813,7 @@ dependencies = [
  "serde_repr",
  "sha1",
  "static_assertions",
+ "tokio",
  "tracing",
  "uds_windows",
  "winapi",

cosmic-applet-battery/Cargo.toml

@@ -8,7 +8,7 @@ once_cell = "1.16.0"
 libcosmic = { git = "https://github.com/pop-os/libcosmic/", branch = "master", default-features = false, features = ["wayland", "applet"] }
 sctk = { package = "smithay-client-toolkit", git = "https://github.com/Smithay/client-toolkit", rev = "3776d4a" }
 futures = "0.3"
-zbus = { version = "3.5", no-default-features = true }
+zbus = { version = "3.5", default-features = false, features = ["tokio"] }
 log = "0.4"
 pretty_env_logger = "0.4"
 # Application i18n