fix: bump macos runner images

Author: rolznz

.github/workflows/build-libraries.yaml

@@ -16,8 +16,8 @@ jobs:
           { host: ubuntu-22.04, tool: cross, target: aarch64-unknown-linux-gnu,   output: libldk_node.so },
           { host: ubuntu-22.04, tool: cross, target: arm-unknown-linux-gnueabihf, output: libldk_node.so },
           { host: windows-2022, tool: cargo, target: x86_64-pc-windows-msvc,      output: ldk_node.dll },
-          { host: macos-13,     tool: cargo, target: x86_64-apple-darwin,         output: libldk_node.dylib },
-          { host: macos-13,     tool: cargo, target: aarch64-apple-darwin,        output: libldk_node.dylib },
+          { host: macos-14,     tool: cargo, target: x86_64-apple-darwin,         output: libldk_node.dylib },
+          { host: macos-14,     tool: cargo, target: aarch64-apple-darwin,        output: libldk_node.dylib },
         ]
     runs-on: ${{ matrix.build.host }}
     steps:
@@ -47,7 +47,7 @@ jobs:
           path: target/${{ matrix.build.target }}/release/${{ matrix.build.output }}
 
   make-macos-universal:
-    runs-on: macos-13
+    runs-on: macos-14
     needs: build
     steps:
       - name: Download macOS artifacts