build: bump once_cell from 1.12.0 to 1.12.1

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.12.0 to 1.12.1.
- [Release notes](https://github.com/matklad/once_cell/releases)
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](https://github.com/matklad/once_cell/compare/v1.12.0...v1.12.1)

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

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

Cargo.lock

@@ -589,9 +589,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.12.0"
+version = "1.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7709cef83f0c1f58f666e746a08b21e0085f7440fa6a29cc194d68aac97a4225"
+checksum = "ac8b1a9b2518dc799a2271eff1688707eb315f0d4697aa6b0871369ca4c4da55"
 
 [[package]]
 name = "openssl-src"

Cargo.toml

@@ -45,7 +45,7 @@ versionize_derive = { git = "https://github.com/cloud-hypervisor/versionize_deri
 [dev-dependencies]
 dirs = "4.0.0"
 net_util = { path = "net_util" }
-once_cell = "1.12.0"
+once_cell = "1.12.1"
 serde_json = "1.0.82"
 test_infra = { path = "test_infra" }
 wait-timeout = "0.2.0"

net_util/Cargo.toml

@@ -21,7 +21,7 @@ vm-virtio = { path = "../vm-virtio" }
 vmm-sys-util = "0.9.0"
 
 [dev-dependencies]
-once_cell = "1.12.0"
+once_cell = "1.12.1"
 pnet = "0.31.0"
 pnet_datalink = "0.31.0"
 serde_json = "1.0.82"

test_infra/Cargo.toml

@@ -8,7 +8,7 @@ edition = "2021"
 dirs = "4.0.0"
 epoll = "4.3.1"
 libc = "0.2.126"
-once_cell = "1.12.0"
+once_cell = "1.12.1"
 ssh2 = { version = "0.9.1", features = ["vendored-openssl"]}
 vmm-sys-util = "0.9.0"
 wait-timeout = "0.2.0"

vmm/Cargo.toml

@@ -34,7 +34,7 @@ linux-loader = { version = "0.4.0", features = ["elf", "bzimage", "pe"] }
 log = "0.4.17"
 micro_http = { git = "https://github.com/firecracker-microvm/micro-http", branch = "main" }
 net_util = { path = "../net_util" }
-once_cell = "1.12.0"
+once_cell = "1.12.1"
 option_parser = { path = "../option_parser" }
 pci = { path = "../pci" }
 qcow = { path = "../qcow" }