build(deps): update core-foundation requirement from 0.6.4 to 0.7.0

Updates the requirements on [core-foundation](https://github.com/servo/core-foundation-rs) to permit the latest version.
- [Release notes](https://github.com/servo/core-foundation-rs/releases)
- [Commits](servo/core-foundation-rs@core-foundation-v0.6.4...core-foundation-v0.7.0)

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

heim-common/Cargo.toml

@@ -31,7 +31,7 @@ winapi = { version = ">=0.3.8", features = ["winnt", "minwindef", "libloaderapi"
 
 [target.'cfg(target_os = "macos")'.dependencies]
 mach = "0.3.2"
-core-foundation = "0.6.4"
+core-foundation = "0.7.0"
 
 [dev-dependencies]
 futures-executor = "^0.3"

heim-disk/Cargo.toml

@@ -35,7 +35,7 @@ features = ["std", "winnt", "ntdef", "fileapi", "handleapi",
 
 [target.'cfg(target_os = "macos")'.dependencies]
 mach = "0.3.2"
-core-foundation = "0.6.4"
+core-foundation = "0.7.0"
 
 [dev-dependencies]
 futures-executor = "^0.3"