fix(deps): update rust crate cortex-m-rt to 0.7.4 (#246)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Cargo.toml

@@ -24,7 +24,7 @@ xmc4700 = { version = "0.8.3", optional = true }
 xmc4800 = { version = "0.9.0", optional = true }
 cortex-m = { version = "0.7.7", features = ['critical-section-single-core'] }
 nb = "1.1.0"
-cortex-m-rt = "0.7.3"
+cortex-m-rt = "0.7.4"
 void = { version = "1.0.2", default-features = false }
 cast = { version = "0.3.0", default-features = false }
 embedded-hal = { version = "0.2.7", features = ["unproven"] }