Bump dbus from 0.9.1 to 0.9.2

Bumps [dbus](https://github.com/diwic/dbus-rs) from 0.9.1 to 0.9.2.
- [Release notes](https://github.com/diwic/dbus-rs/releases)
- [Commits](https://github.com/diwic/dbus-rs/compare/dbus-v0.9.1...dbus-v0.9.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Cargo.lock

@@ -752,9 +752,9 @@ dependencies = [
 
 [[package]]
 name = "dbus"
-version = "0.9.1"
+version = "0.9.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3b1334c0161ddfccd239ac81b188d62015b049c986c5cd0b7f9447cf2c54f4a3"
+checksum = "f597e08dfa79b593f23bbfc7840b23b2c5aa2e3a98d8e68b67b5b9ff800dc0db"
 dependencies = [
  "libc",
  "libdbus-sys",

Cargo.toml

@@ -36,7 +36,7 @@ toml = "0.5"
 tokio-core = "0.1"
 tokio-timer = "0.2"
 unicode-width = "0.1.8"
-dbus = { version = "0.9.1", optional = true }
+dbus = { version = "0.9.2", optional = true }
 dbus-tree = { version = "0.9.0", optional = true }
 rand = "0.8"
 webbrowser = "0.5"