build(deps): bump cortex-m from 0.7.2 to 0.7.3

Bumps [cortex-m](https://github.com/rust-embedded/cortex-m) from 0.7.2 to 0.7.3.
- [Release notes](https://github.com/rust-embedded/cortex-m/releases)
- [Changelog](https://github.com/rust-embedded/cortex-m/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-embedded/cortex-m/compare/v0.7.2...v0.7.3)

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

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

Cargo.lock

@@ -38,7 +38,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9a69a963b70ddacfcd382524f72a4576f359af9334b3bf48a79566590bb8bfa"
 dependencies = [
  "bitrate",
- "cortex-m 0.7.2",
+ "cortex-m 0.6.7",
  "embedded-hal",
 ]
 
@@ -48,7 +48,7 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "30302dda7a66f8c55932ebf208f7def840743ff64d495e9ceffcd97c18f11d39"
 dependencies = [
- "cortex-m 0.7.2",
+ "cortex-m 0.7.3",
 ]
 
 [[package]]
@@ -126,15 +126,15 @@ dependencies = [
  "aligned",
  "bare-metal 0.2.5",
  "bitfield",
- "cortex-m 0.7.2",
+ "cortex-m 0.7.3",
  "volatile-register",
 ]
 
 [[package]]
 name = "cortex-m"
-version = "0.7.2"
+version = "0.7.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "643a210c1bdc23d0db511e2a576082f4ff4dcae9d0c37f50b431b8f8439d6d6b"
+checksum = "2ac919ef424449ec8c08d515590ce15d9262c0ca5f0da5b0c901e971a3b783b3"
 dependencies = [
  "bare-metal 0.2.5",
  "bitfield",
@@ -645,7 +645,7 @@ version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "065d6058bb1204f51a562a67209e1817cf714759d5cf845aa45c75fa7b0b9d9b"
 dependencies = [
- "cortex-m 0.7.2",
+ "cortex-m 0.7.3",
  "ufmt-write",
 ]
 
@@ -774,7 +774,7 @@ version = "0.5.0"
 dependencies = [
  "ad9959",
  "asm-delay",
- "cortex-m 0.7.2",
+ "cortex-m 0.7.3",
  "cortex-m-rt",
  "cortex-m-rtic",
  "dsp",
@@ -810,7 +810,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b672c837e0ee8158ecc7fce0f9a948dd0693a9c588338e728d14b73307a0b7d"
 dependencies = [
  "bare-metal 0.2.5",
- "cortex-m 0.7.2",
+ "cortex-m 0.6.7",
  "cortex-m-rt",
  "vcell",
 ]
@@ -822,7 +822,7 @@ source = "git+https://github.com/quartiq/stm32h7xx-hal.git?rev=33aa67d#33aa67d74
 dependencies = [
  "bare-metal 1.0.0",
  "cast",
- "cortex-m 0.7.2",
+ "cortex-m 0.7.3",
  "cortex-m-rt",
  "embedded-dma",
  "embedded-hal",