Update perl to v0.2.0 (#5335)

## Summary
- Switch PerlNavigator install from GitHub release binaries to npm,
fixing aarch64/Apple Silicon support
- PATH-installed perlnavigator is still preferred when available (no
install needed)

Fixes tree-sitter-perl/zed-perl#11

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: rabbiveesh

extensions.toml

@@ -2950,7 +2950,7 @@ version = "1.0.1"
 
 [perl]
 submodule = "extensions/perl"
-version = "0.1.1"
+version = "0.2.0"
 
 [perm]
 submodule = "extensions/perm"