Update core-foundation requirement from 0.6.0 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-v0.6.2...core-foundation-v0.7.0)

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

Cargo.toml

@@ -76,7 +76,7 @@ im-rc = "13.0.0"
 rustc-workspace-hack = "1.0.0"
 
 [target.'cfg(target_os = "macos")'.dependencies]
-core-foundation = { version = "0.6.0", features = ["mac_os_10_7_support"] }
+core-foundation = { version = "0.7.0", features = ["mac_os_10_7_support"] }
 
 [target.'cfg(windows)'.dependencies]
 miow = "0.3.1"