Revert containerization pin back to apple/containerization 0.33.2

The branch pin to full-chaos/containerization@feat/chaos-1380-blkio-runtime
was a temporary measure while apple/containerization#739 was in flight.
Revert to the upstream pin so this PR can be merged independently of apple#739.

Note: the runtime plumbing in RuntimeService.swift still references
Containerization.LinuxBlockIO and czConfig.blockIO, which only exist on
the apple#739 branch. The build will be temporarily broken until apple#739 lands
upstream and the pin is bumped to whatever release contains it.

Author: chrisgeo

Package.resolved

@@ -23,7 +23,7 @@ import PackageDescription
 let releaseVersion = ProcessInfo.processInfo.environment["RELEASE_VERSION"] ?? "0.0.0"
 let gitCommit = ProcessInfo.processInfo.environment["GIT_COMMIT"] ?? "unspecified"
 let builderShimVersion = "0.12.0"
-let scVersion = "feat/chaos-1380-blkio-runtime"
+let scVersion = "0.33.2"
 
 let package = Package(
     name: "container",
@@ -49,7 +49,7 @@ let package = Package(
         .library(name: "TerminalProgress", targets: ["TerminalProgress"]),
     ],
     dependencies: [
-        .package(url: "https://github.com/full-chaos/containerization.git", branch: scVersion),
+        .package(url: "https://github.com/apple/containerization.git", exact: Version(stringLiteral: scVersion)),
         .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.3.0"),
         .package(url: "https://github.com/apple/swift-collections.git", from: "1.2.0"),
         .package(url: "https://github.com/apple/swift-configuration", from: "1.0.0"),