fix: add pcre2 and libyaml to macos install script

[dsabsay]

Fixes #1359.

This install script failed for me the first time I think because I had old x86_64 installs of these dependencies. Installing ARM versions fixed the issue.

Summary by CodeRabbit

• Chores
  • Updated macOS installer script to include additional Homebrew build dependencies for enhanced compatibility and stability during installation.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 2d35ea6a-bb99-440d-8355-e731db62cf91

📥 Commits

Reviewing files that changed from the base of the PR and between 7c127b9 and cb27bca.

📒 Files selected for processing (1)

• install-ctags-macos.sh

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Walkthrough

The macOS ctags installer script adds pcre2 and libyaml to the Homebrew dependency installation command, expanding the list from autoconf automake pkg-config jansson to also include these two libraries before building universal-ctags v6.1.0.

Changes

macOS ctags build dependency fix

Layer / File(s)	Summary
Expand Homebrew build dependencies install-ctags-macos.sh	pcre2 and libyaml added to the brew install command that runs before the universal-ctags build.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• sourcebot-dev/sourcebot#1023: Introduces install-ctags-macos.sh with the initial Homebrew dependency list that this PR extends with pcre2 and libyaml.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'fix: add pcre2 and libyaml to macos install script' directly matches the main change in the PR, which adds these two dependencies to the macOS installation script.
Linked Issues check	✅ Passed	The PR fully addresses issue #1359 by adding pcre2 and libyaml to the install-ctags-macos.sh script's dependency list, resolving the architecture mismatch linker errors.
Out of Scope Changes check	✅ Passed	All changes are scoped to resolving the linker error issue by adding the required dependencies; no unrelated modifications are present.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

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• Create PR with unit tests

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[brendan-kellam]

lgtm thx!