build: link with lld by default on Linux; add Xcode 14.1 to CI matrix

Change-Id: I209894f1e53f5c3b95b379e0b843be821f8a12c1
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3495a8f..b551e45 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -52,6 +52,8 @@
         include:
           - os: macos-12
             xcode: '13.4'
+          - os: macos-12
+            xcode: '14.1'
     steps:
       - name: Set up Xcode
         uses: maxim-lobanov/setup-xcode@v1