build: bump gdbstub from 0.6.2 to 0.6.3

Bumps [gdbstub](https://github.com/daniel5151/gdbstub) from 0.6.2 to 0.6.3.
- [Release notes](https://github.com/daniel5151/gdbstub/releases)
- [Changelog](https://github.com/daniel5151/gdbstub/blob/master/CHANGELOG.md)
- [Commits](https://github.com/daniel5151/gdbstub/compare/0.6.2...0.6.3)

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

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

Cargo.lock

@@ -317,9 +317,9 @@ checksum = "3f9eec918d3f24069decb9af1554cad7c880e2da24a9afd88aca000531ab82c1"
 
 [[package]]
 name = "gdbstub"
-version = "0.6.2"
+version = "0.6.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1c1f9371c87c11642ee94dcf92cb48b1484ba250b8e8bff3df71c28651f3f4e7"
+checksum = "32c95766e0414f8bfc1d07055574c621b67739466d6ba516c4fef8e99d30d2e6"
 dependencies = [
  "bitflags",
  "cfg-if",

vmm/Cargo.toml

@@ -26,7 +26,7 @@ clap = "3.2.17"
 devices = { path = "../devices" }
 epoll = "4.3.1"
 event_monitor = { path = "../event_monitor" }
-gdbstub = { version = "0.6.2", optional = true }
+gdbstub = { version = "0.6.3", optional = true }
 gdbstub_arch = { version = "0.2.3", optional = true }
 hypervisor = { path = "../hypervisor" }
 libc = "0.2.132"