Bump dbus from 0.9.3 to 0.9.4

Bumps [dbus](https://github.com/diwic/dbus-rs) from 0.9.3 to 0.9.4.
- [Release notes](https://github.com/diwic/dbus-rs/releases)
- [Commits](https://github.com/diwic/dbus-rs/compare/dbus-v0.9.3...dbus-v0.9.4)

---
updated-dependencies:
- dependency-name: dbus
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -676,9 +676,9 @@ dependencies = [
 
 [[package]]
 name = "dbus"
-version = "0.9.3"
+version = "0.9.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c8862bb50aa3b2a2db5bfd2c875c73b3038aa931c411087e335ca8ca0ed430b9"
+checksum = "60b225f88dd3718253526c38bc333b9986b547a7580abf81186c9461647b2487"
 dependencies = [
  "libc",
  "libdbus-sys",
@@ -1522,9 +1522,9 @@ checksum = "3cb00336871be5ed2c8ed44b60ae9959dc5b9f08539422ed43f09e34ecaeba21"
 
 [[package]]
 name = "libdbus-sys"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dc12a3bc971424edbbf7edaf6e5740483444db63aa8e23d3751ff12a30f306f0"
+checksum = "c185b5b7ad900923ef3a8ff594083d4d9b5aea80bb4f32b8342363138c0d456b"
 dependencies = [
  "pkg-config",
 ]

Cargo.toml

@@ -36,7 +36,7 @@ tokio = { version = "1", features = ["rt-multi-thread", "sync", "time"] }
 tokio-stream = "0.1.7"
 toml = "0.5"
 unicode-width = "0.1.9"
-dbus = { version = "0.9.3", optional = true }
+dbus = { version = "0.9.4", optional = true }
 dbus-tree = { version = "0.9.0", optional = true }
 rand = "0.8"
 webbrowser = "0.5"