Merge pull request #49 from beeware/py3.13-support

Add support for Python 3.13

Author: freakboy3742

.github/workflows/ci.yml

@@ -45,7 +45,7 @@ jobs:
           - "windows-app"
           - "iOS"
           - "android"
-        python-version: [ "3.9", "3.10", "3.11", "3.12" ]
+        python-version: [ "3.9", "3.10", "3.11", "3.12", "3.13-dev" ]
         include:
           - runs-on: ubuntu-latest
           - pre-command:
@@ -90,7 +90,7 @@ jobs:
             briefcase-run-args: ' -d "iPhone SE (3rd generation)"'
 
           - backend: android
-            runs-on: "ubuntu-latest"
+            runs-on: ubuntu-latest
             briefcase-target: "android"
             briefcase-run-args: >
               --device '{"avd":"beePhone"}'
@@ -106,12 +106,22 @@ jobs:
               sudo udevadm control --reload-rules
               sudo udevadm trigger --name-match=kvm
         exclude:
-          # Binary packages aren't available for 3.11+ on Android yet
-          - backend: "android"
+          # Cryptography isn't available for 3.11+ on Android yet
+          - backend: android
             python-version: "3.11"
-
-          - backend: "android"
+          - backend: android
             python-version: "3.12"
+          # Binary packages aren't available for 3.13 on Android yet
+          - backend: android
+            python-version: "3.13-dev"
+          # Support package isn't available for 3.13 on Linux
+          - backend: "linux-flatpak"
+            python-version: "3.13-dev"
+          # Support package isn't available for 3.13 on Window
+          - backend: "windows-VisualStudio"
+            python-version: "3.13-dev"
+          - backend: "windows-app"
+            python-version: "3.13-dev"
 
     steps:
     - name: Checkout
@@ -132,6 +142,7 @@ jobs:
       uses: beeware/.github/.github/actions/install-briefcase@main
 
     - name: Test App
+      timeout-minutes: 15
       run: briefcase run ${{ matrix.briefcase-target }} --test ${{ matrix.briefcase-run-args }}
 
     - name: Package