Replace macos-13 runners with macos-15

Reference: actions/runner-images#13046
Signed-off-by: Ayan Sinha Mahapatra <asmahapatra@aboutcode.org>

Author: AyanSinhaMahapatra

.github/workflows/scancode-release.yml

@@ -239,7 +239,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        os: [ubuntu-24.04, ubuntu-24.04, macos-13, macos-14]
+        os: [ubuntu-24.04, ubuntu-24.04, macos-14, macos-15]
         pyver: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:
@@ -375,7 +375,7 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        os: [macos-13, macos-14]
+        os: [macos-14, macos-15]
         pyver: ["3.10", "3.11", "3.12", "3.13"]
 
     steps:

azure-pipelines.yml

@@ -147,8 +147,8 @@ jobs:
 
     - template: etc/ci/azure-posix.yml
       parameters:
-          job_name: macos13_cpython
-          image_name: macOS-13
+          job_name: macos15_cpython
+          image_name: macOS-15
           python_versions: ['3.10', '3.11', '3.12', '3.13']
           test_suites:
               all: venv/bin/pytest -n 2 -vvs tests/scancode/test_cli.py --reruns 2
@@ -222,8 +222,8 @@ jobs:
 
     - template: etc/ci/azure-posix.yml
       parameters:
-          job_name: macos13_cpython_latest_from_pip
-          image_name: macos-13
+          job_name: macos15_cpython_latest_from_pip
+          image_name: macos-15
           python_versions: ['3.10', '3.11', '3.12', '3.13']
           test_suites:
               all: venv/bin/pip install --upgrade-strategy eager --force-reinstall --upgrade -e .[testing] && venv/bin/pytest -n 2 -vvs tests/scancode/test_cli.py