Bump rtt-target from 0.2.2 to 0.3.1

Bumps [rtt-target](https://github.com/mvirkkunen/rtt-target) from 0.2.2 to 0.3.1.
- [Release notes](https://github.com/mvirkkunen/rtt-target/releases)
- [Commits](https://github.com/mvirkkunen/rtt-target/compare/v0.2.2...v0.3.1)

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

Cargo.lock

@@ -648,7 +648,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d082d3a20a5d4f69ad509720de1777fe5aa2092ea1af51b254ff79113d46d2ea"
 dependencies = [
  "log",
- "rtt-target",
+ "rtt-target 0.2.2",
 ]
 
 [[package]]
@@ -661,6 +661,16 @@ dependencies = [
  "ufmt-write",
 ]
 
+[[package]]
+name = "rtt-target"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "065d6058bb1204f51a562a67209e1817cf714759d5cf845aa45c75fa7b0b9d9b"
+dependencies = [
+ "cortex-m 0.7.2",
+ "ufmt-write",
+]
+
 [[package]]
 name = "rustc_version"
 version = "0.2.3"
@@ -774,7 +784,7 @@ dependencies = [
  "num_enum",
  "paste",
  "rtt-logger",
- "rtt-target",
+ "rtt-target 0.3.1",
  "serde",
  "serde-json-core",
  "shared-bus",

Cargo.toml

@@ -31,7 +31,7 @@ members = ["ad9959", "dsp"]
 cortex-m = { version = "0.6", features = ["const-fn"] }
 cortex-m-rt = { version = "0.6", features = ["device"] }
 log = { version = "0.4", features = ["max_level_trace", "release_max_level_info"] }
-rtt-target = { version = "0.2.1", features = ["cortex-m"] }
+rtt-target = { version = "0.3.1", features = ["cortex-m"] }
 rtt-logger = { version = "0.1" }
 serde = { version = "1.0", features = ["derive"], default-features = false }
 heapless = { version = "0.6", features = ["serde"] }