build(deps): bump github.com/containerd/platforms

Bumps [github.com/containerd/platforms](https://github.com/containerd/platforms) from 1.0.0-rc.2 to 1.0.0-rc.3.
- [Release notes](https://github.com/containerd/platforms/releases)
- [Commits](containerd/platforms@v1.0.0-rc.2...v1.0.0-rc.3)

---
updated-dependencies:
- dependency-name: github.com/containerd/platforms
  dependency-version: 1.0.0-rc.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

go.mod

@@ -12,7 +12,7 @@ require (
 	github.com/containerd/console v1.0.5
 	github.com/containerd/containerd/v2 v2.2.2
 	github.com/containerd/errdefs v1.0.0
-	github.com/containerd/platforms v1.0.0-rc.2
+	github.com/containerd/platforms v1.0.0-rc.3
 	github.com/distribution/reference v0.6.0
 	github.com/docker/buildx v0.31.1
 	github.com/docker/cli v29.2.1+incompatible

go.sum

@@ -54,8 +54,8 @@ github.com/containerd/log v0.1.0 h1:TCJt7ioM2cr/tfR8GPbGf9/VRAX8D2B4PjzCpfX540I=
 github.com/containerd/log v0.1.0/go.mod h1:VRRf09a7mHDIRezVKTRCrOq78v577GXq3bSa3EhrzVo=
 github.com/containerd/nydus-snapshotter v0.15.10 h1:hphjuKOqSHLGznNJiAvmsOWkdu4qFXjf4DzGrWSuIsM=
 github.com/containerd/nydus-snapshotter v0.15.10/go.mod h1:EWRd/QJ0b6UKHAqYgiV5gHlqLC2qq5cQiSlXEdVovrA=
-github.com/containerd/platforms v1.0.0-rc.2 h1:0SPgaNZPVWGEi4grZdV8VRYQn78y+nm6acgLGv/QzE4=
-github.com/containerd/platforms v1.0.0-rc.2/go.mod h1:J71L7B+aiM5SdIEqmd9wp6THLVRzJGXfNuWCZCllLA4=
+github.com/containerd/platforms v1.0.0-rc.3 h1:YdvwaHtrN6wHcGJ2mYRYP3Nso8OcysuqFe9Hxm1X/tI=
+github.com/containerd/platforms v1.0.0-rc.3/go.mod h1:gw0R+alP3nFQPh1L4K9bv13fRWeeyokLGLu2fKuqI10=
 github.com/containerd/plugin v1.0.0 h1:c8Kf1TNl6+e2TtMHZt+39yAPDbouRH9WAToRjex483Y=
 github.com/containerd/plugin v1.0.0/go.mod h1:hQfJe5nmWfImiqT1q8Si3jLv3ynMUIBB47bQ+KexvO8=
 github.com/containerd/stargz-snapshotter v0.17.0 h1:djNS4KU8ztFhLdEDZ1bsfzOiYuVHT6TgSU5qwRk+cNc=