build(deps): bump github.com/containerd/containerd from 1.6.15 to 1.6.18

Bumps [github.com/containerd/containerd](https://github.com/containerd/containerd) from 1.6.15 to 1.6.18.
- [Release notes](https://github.com/containerd/containerd/releases)
- [Changelog](https://github.com/containerd/containerd/blob/main/RELEASES.md)
- [Commits](containerd/containerd@v1.6.15...v1.6.18)

---
updated-dependencies:
- dependency-name: github.com/containerd/containerd
  dependency-type: indirect
...

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

go.mod

@@ -145,7 +145,7 @@ require (
 	github.com/cncf/udpa/go v0.0.0-20220112060539-c52dc94e7fbe // indirect
 	github.com/cncf/xds/go v0.0.0-20230105202645-06c439db220b // indirect
 	github.com/common-nighthawk/go-figure v0.0.0-20210622060536-734e95fb86be // indirect
-	github.com/containerd/containerd v1.6.15 // indirect
+	github.com/containerd/containerd v1.6.18 // indirect
 	github.com/containerd/continuity v0.3.0 // indirect
 	github.com/containerd/stargz-snapshotter/estargz v0.12.1 // indirect
 	github.com/coreos/go-oidc/v3 v3.5.0 // indirect

go.sum

@@ -403,8 +403,8 @@ github.com/common-nighthawk/go-figure v0.0.0-20210622060536-734e95fb86be h1:J5BL
 github.com/common-nighthawk/go-figure v0.0.0-20210622060536-734e95fb86be/go.mod h1:mk5IQ+Y0ZeO87b858TlA645sVcEcbiX6YqP98kt+7+w=
 github.com/containerd/cgroups v1.0.4 h1:jN/mbWBEaz+T1pi5OFtnkQ+8qnmEbAr1Oo1FRm5B0dA=
 github.com/containerd/console v1.0.3/go.mod h1:7LqA/THxQ86k76b8c/EMSiaJ3h1eZkMkXar0TQ1gf3U=
-github.com/containerd/containerd v1.6.15 h1:4wWexxzLNHNE46aIETc6ge4TofO550v+BlLoANrbses=
-github.com/containerd/containerd v1.6.15/go.mod h1:U2NnBPIhzJDm59xF7xB2MMHnKtggpZ+phKg8o2TKj2c=
+github.com/containerd/containerd v1.6.18 h1:qZbsLvmyu+Vlty0/Ex5xc0z2YtKpIsb5n45mAMI+2Ns=
+github.com/containerd/containerd v1.6.18/go.mod h1:1RdCUu95+gc2v9t3IL+zIlpClSmew7/0YS8O5eQZrOw=
 github.com/containerd/continuity v0.3.0 h1:nisirsYROK15TAMVukJOUyGJjz4BNQJBVsNvAXZJ/eg=
 github.com/containerd/continuity v0.3.0/go.mod h1:wJEAIwKOm/pBZuBd0JmeTvnLquTB1Ag8espWhkykbPM=
 github.com/containerd/stargz-snapshotter/estargz v0.12.1 h1:+7nYmHJb0tEkcRaAW+MHqoKaJYZmkikupxCqVtmPuY0=