cargo: bump the patch group

Bumps the patch group in /src/exercises/bare-metal/rtc with 4 updates: [bitflags](https://github.com/bitflags/bitflags), [chrono](https://github.com/chronotope/chrono), [log](https://github.com/rust-lang/log) and [zerocopy](https://github.com/google/zerocopy).


Updates `bitflags` from 2.9.3 to 2.9.4
- [Release notes](https://github.com/bitflags/bitflags/releases)
- [Changelog](https://github.com/bitflags/bitflags/blob/main/CHANGELOG.md)
- [Commits](bitflags/bitflags@2.9.3...2.9.4)

Updates `chrono` from 0.4.41 to 0.4.42
- [Release notes](https://github.com/chronotope/chrono/releases)
- [Changelog](https://github.com/chronotope/chrono/blob/main/CHANGELOG.md)
- [Commits](chronotope/chrono@v0.4.41...v0.4.42)

Updates `log` from 0.4.27 to 0.4.28
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](rust-lang/log@0.4.27...0.4.28)

Updates `zerocopy` from 0.8.26 to 0.8.27
- [Release notes](https://github.com/google/zerocopy/releases)
- [Changelog](https://github.com/google/zerocopy/blob/main/CHANGELOG.md)
- [Commits](google/zerocopy@v0.8.26...v0.8.27)

---
updated-dependencies:
- dependency-name: bitflags
  dependency-version: 2.9.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patch
- dependency-name: chrono
  dependency-version: 0.4.42
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patch
- dependency-name: log
  dependency-version: 0.4.28
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patch
- dependency-name: zerocopy
  dependency-version: 0.8.27
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/exercises/bare-metal/rtc/Cargo.lock

@@ -11,10 +11,10 @@ aarch64-paging = { version = "0.10.0", default-features = false }
 aarch64-rt = "0.2.2"
 arm-gic = "0.6.1"
 arm-pl011-uart = "0.3.2"
-bitflags = "2.9.3"
-chrono = { version = "0.4.41", default-features = false }
-log = "0.4.27"
+bitflags = "2.9.4"
+chrono = { version = "0.4.42", default-features = false }
+log = "0.4.28"
 safe-mmio = "0.2.5"
 smccc = "0.2.2"
 spin = "0.10.0"
-zerocopy = "0.8.26"
+zerocopy = "0.8.27"