Fix CI/CD fail by install ImageMagick on runners

This commit addresses an issue where CI/CD jobs fail due to the removal of
`imagemagick` from GitHub's preinstalled software list for Ubuntu
runners. As a result, commands relying on `imagemagick` were not found.

To resolve this, the commit installs `imagemagick` across all platforms
(Linux, macOS, and Windows). This safeguards against future changes to
the preinstalled software list on GitHub runners.

.github/workflows/checks.scripts.yaml

@@ -9,16 +9,21 @@ jobs:
     runs-on: ${{ matrix.os }}-latest
     strategy:
       matrix:
-        os: [ macos, ubuntu, windows ]
+        os:
+          - name: macos
+            install-imagemagick-command: brew install imagemagick
+          - name: ubuntu
+            install-imagemagick-command: sudo apt install -y imagemagick
+          - name: windows
+            install-imagemagick-command: choco install -y imagemagick
       fail-fast: false # Still interested to see results from other combinations
     steps:
       -
         name: Checkout
         uses: actions/checkout@v4
       -
-        name: Install ImageMagick on macOS
-        if: matrix.os == 'macos'
-        run: brew install imagemagick
+        name: Install ImageMagick
+        run: ${{ matrix.os.install-imagemagick-command }}
       -
         name: Setup node
         uses: ./.github/actions/setup-node