build(deps): bump cli_util from 0.5.2 to 0.6.0 in the root-pub group

[dependabot]

Bumps the root-pub group with 1 update: cli_util.

Updates cli_util from 0.5.2 to 0.6.0

Release notes

Sourced from cli_util's releases.

package:cli_util v0.6.0

• Breaking Change: sdkPath now returns String? (returning null if no valid Dart SDK can be located).
• Support robust SDK discovery for AOT-compiled tools (dart install, dart build cli) probing Platform.resolvedExecutable, DART_ROOT, DART_SDK, system PATH (with Flutter wrapper layout awareness), and FLUTTER_ROOT.
• Add dartExecutable getter (String?) to locate the dart binary.
• Add isValidSdkPath(String candidatePath) validation helper.

Commits

• 8217b21 release: cli_util v0.6.0 (#2545)
• e5de03d Fix HTML tokenizer failing to close CDATA blocks on extra brackets (#2548)
• edcac84 feat(cli_util): support AOT SDK discovery with nullable getters (#2541)
• 0580d20 feat(unified_analytics): add dependency telemetry to Event.dartCliCommandExec...
• 1b36aab Update version for publish (#2539)
• 0b20e83 Add a field to Event.dartMCPEvent to track plugin usage (#2538)
• 3380098 Add sanity check for targetPackage name in package:extension_discovery (#2535)
• 0759473 Fix block scalar chomping edge case for EOF without newline (#2454)
• abd2551 Release source_maps 0.10.14. (#2531)
• a22c3a6 Allow **/ to match zero directories (#2506)
• Additional commits viewable in compare view

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[dependabot]

Looks like cli_util is updatable in another way, so this is no longer needed.