build: bump gdbstub from 0.6.0 to 0.6.1

Bumps [gdbstub](https://github.com/daniel5151/gdbstub) from 0.6.0 to 0.6.1.
- [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/0.6.0...0.6.1)

---
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

@@ -278,9 +278,9 @@ checksum = "b643857cf70949306b81d7e92cb9d47add673868edac9863c4a49c42feaf3f1e"
 
 [[package]]
 name = "gdbstub"
-version = "0.6.0"
+version = "0.6.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "686fd5c0d799433870f0ba2ec2bf97697b1369aa8ce71559e2eaafb186a9c5f2"
+checksum = "9fa2ca5d6b045de372cef3991f873389b421b4cabcfbe52f7787fae8b8b37906"
 dependencies = [
  "bitflags",
  "cfg-if",

vmm/Cargo.toml

@@ -25,7 +25,7 @@ clap = "3.1.2"
 devices = { path = "../devices" }
 epoll = "4.3.1"
 event_monitor = { path = "../event_monitor" }
-gdbstub = "0.6.0"
+gdbstub = "0.6.1"
 gdbstub_arch = "0.2.0"
 hypervisor = { path = "../hypervisor" }
 lazy_static = "1.4.0"