Bump generic-array from 0.12.3 to 0.12.4 in /examples/tos_meets_rust/app

Bumps [generic-array](https://github.com/fizyk20/generic-array) from 0.12.3 to 0.12.4.
- [Release notes](https://github.com/fizyk20/generic-array/releases)
- [Changelog](https://github.com/fizyk20/generic-array/blob/0.12.4/CHANGELOG.md)
- [Commits](https://github.com/fizyk20/generic-array/compare/0.12.3...0.12.4)

---
updated-dependencies:
- dependency-name: generic-array
  dependency-type: indirect
...

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

examples/tos_meets_rust/app/Cargo.lock

@@ -1,5 +1,7 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
+version = 3
+
 [[package]]
 name = "aligned"
 version = "0.2.0"
@@ -30,7 +32,7 @@ version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bb4d1c23475b74e3672afa8c2be22040b8b7783ad9b461021144ed10a46bb0e6"
 dependencies = [
- "generic-array 0.12.3",
+ "generic-array 0.12.4",
  "generic-array 0.13.2",
  "generic-array 0.14.4",
  "stable_deref_trait",
@@ -99,9 +101,9 @@ checksum = "7313c0d620d0cb4dbd9d019e461a4beb501071ff46ec0ab933efb4daa76d73e3"
 
 [[package]]
 name = "generic-array"
-version = "0.12.3"
+version = "0.12.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
+checksum = "ffdf9f34f1447443d37393cc6c2b8313aebddcd96906caf34e54c68d8e57d7bd"
 dependencies = [
  "typenum",
 ]