Upgrade from deprecated macos-13 to macos-15-intel in CI

Upgrade from deprecated `macos-13` GitHub Actions runner to `macos-15-intel`.

The currently available GitHub Actions macOS runners are:
| macOS Version | runner.arch |
|---------------|-------------|
| macos-13 | X64 |
| macos-14 | ARM64 |
| macos-15 | ARM64 |
| macos-15-intel | X64 |
| macos-26 | ARM64 |
| macos-latest | ARM64 |
* Let's prepare for actions/runner-images#13046
* Like: kivy/kivy#9162

Should a set of test runs be made on `macos-26`?

Author: cclauss

.github/workflows/android.yml

@@ -10,10 +10,10 @@ jobs:
       matrix:
         os:
           - 'ubuntu-latest'
-          - 'macOs-latest'
+          - 'macos-latest'
     runs-on: ${{ matrix.os }}
     steps:
-    - name: Setup python
+    - name: Setup Python
       uses: actions/setup-python@v6
       with:
         python-version: '3.x'
@@ -28,14 +28,14 @@ jobs:
         pip install .
     - run: buildozer --help
     - run: buildozer init
-    - name: SDK, NDK and p4a download
+    - name: SDK, NDK, and p4a download
       run: |
         sed -i.bak "s/# android.accept_sdk_license = False/android.accept_sdk_license = True/" buildozer.spec
         sed -i.bak "s/#p4a.branch = master/p4a.branch = develop/" buildozer.spec
         buildozer android p4a -- --help
     # Install OS specific dependencies
     - name: Install Linux dependencies
-      if: matrix.os == 'ubuntu-latest'
+      if: runner.os == 'Linux'
       # Required by some p4a recipes, but not
       # installed by p4a on Linux.
       run: |

.github/workflows/ios.yml

@@ -5,12 +5,14 @@ jobs:
     name: "Integration (${{ matrix.runs_on }}, ${{ matrix.python }})"
     runs-on: ${{ matrix.runs_on }}
     strategy:
+      fail-fast: false
       matrix:
-        # macos-latest (ATM macos-15) runs on Apple Silicon,
-        # macos-13 runs on Intel
-        runs_on: [macos-latest, macos-13]
+        # macos-15-intel runs on Intel.
+        # All others run on Apple Silicon (ARM)
+        runs_on: [macos-14, macos-latest, macos-26, macos-15-intel]
+        python: [3.x]
     steps:
-    - name: Setup python
+    - name: "Setup Python ${{ matrix.python }} on ${{ matrix.runs_on }} (${{ runner.arch }})" 
       uses: actions/setup-python@v6
       with:
         python-version: '3.x'
@@ -27,6 +29,10 @@ jobs:
     - name: Install dependencies
       run: |
         brew install autoconf automake libtool pkg-config
+    - name: Install Metal Toolchain on macOS 26
+      if: matrix.runs_on == 'macos-26'  #  actions/runner-images#13080
+      run: |
+        sudo xcodebuild -downloadComponent MetalToolchain 
     - name: buildozer ios debug
       run: |
         touch main.py