Use wx-3.2 packages for CI on Linux

.github/workflows/ci.yml

@@ -17,6 +17,11 @@ jobs:
     - name: Checkout submodules
       # submodules are not used by the build, but needed for `make dist`:
       run: git submodule update --init deps/json deps/pugixml
+    - name: "Add wxWidgets 3.2 packages"
+        # this is for build testing only, not shipping binaries, so don't bother verifying the key
+        run: |
+          sudo apt-key adv --fetch-keys https://repos.codelite.org/CodeLite.asc
+          sudo apt-add-repository 'deb https://repos.codelite.org/wx3.2/ubuntu/ jammy universe'
     - name: Install dependencies
       run: |
         sudo apt-get update && \
@@ -31,8 +36,8 @@ jobs:
             libboost-iostreams-dev \
             liblucene++-dev \
             libicu-dev \
-            libwxgtk3.0-gtk3-dev \
-            libwxgtk-webview3.0-gtk3-dev \
+            libwxgtk3.2unofficial-dev \
+            libwxgtk-webview3.2unofficial-dev \
             libgtk-3-dev \
             libgtkspell3-3-dev \
             libcld2-dev \