Update dependency macos to v15 (#24)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -72,7 +72,7 @@ jobs:
 
   bazel_macos:
     name: bazel macos 14
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - name: checkout
         uses: actions/checkout@v5
@@ -247,7 +247,7 @@ jobs:
 
   cmake_macos:
     name: cmake macos 14
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - name: checkout
         uses: actions/checkout@v5
@@ -524,7 +524,7 @@ jobs:
 
   gradle_macos:
     name: gradle macos 14
-    runs-on: macos-14
+    runs-on: macos-15
     steps:
       - name: checkout
         uses: actions/checkout@v5