cargo: bump bitflags from 2.9.4 to 2.10.0 in /src/exercises/bare-metal/rtc in the minor group (#2969)

Bumps the minor group in /src/exercises/bare-metal/rtc with 1 update:
[bitflags](https://github.com/bitflags/bitflags).

Updates `bitflags` from 2.9.4 to 2.10.0

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

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

@@ -11,7 +11,7 @@ aarch64-paging = { version = "0.10.0", default-features = false }
 aarch64-rt = "0.2.2"
 arm-gic = "0.7.1"
 arm-pl011-uart = "0.3.2"
-bitflags = "2.9.4"
+bitflags = "2.10.0"
 chrono = { version = "0.4.42", default-features = false }
 log = "0.4.28"
 safe-mmio = "0.2.5"