GitHub Actions: Test on Python 3.14 release candidate 2

* https://www.python.org/download/pre-releases
* https://www.python.org/downloads/release/python-3140rc2

Author: cclauss

.ci/build-wheels.sh

@@ -57,7 +57,7 @@ make install;
 make distclean;
 
 cd ~/ffmpeg_sources;
-curl -kLO "https://cfhcable.dl.sourceforge.net/project/lame/lame/$LAME_VERSION/lame-$LAME_VERSION.tar.gz"
+curl -kLO "https://downloads.sourceforge.net/project/lame/lame/$LAME_VERSION/lame-$LAME_VERSION.tar.gz"
 tar xzf "lame-$LAME_VERSION.tar.gz"
 cd "lame-$LAME_VERSION"
 ./configure --prefix="$BUILD_DIR" --enable-nasm --enable-shared;

.ci/build_wheels_osx.sh

@@ -127,7 +127,7 @@ if [ "$ARCH" = "x86_64" ]; then
   arg=("--enable-nasm")
 fi
 cd "$SRC_PATH";
-curl -kLO "https://cfhcable.dl.sourceforge.net/project/lame/lame/$LAME_VERSION/lame-$LAME_VERSION.tar.gz"
+curl -kLO "https://downloads.sourceforge.net/project/lame/lame/$LAME_VERSION/lame-$LAME_VERSION.tar.gz"
 tar xzf "lame-$LAME_VERSION.tar.gz"
 cd "lame-$LAME_VERSION"
 git apply "$base_dir/.ci/libmp3lame-symbols.patch"

.github/workflows/pythonapp.yml

@@ -19,11 +19,11 @@ jobs:
       FFMPEG_ROOT: ~/ff_deps/ffmpeg
     strategy:
       matrix:
-        python: [ '3.9', '3.10', '3.11', '3.12', '3.13']
+        python: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
     steps:
-    - uses: actions/checkout@v4.2.2
+    - uses: actions/checkout@v5
     - name: Set up Python ${{ matrix.python }}
-      uses: actions/setup-python@v5.4.0
+      uses: actions/setup-python@v6
       with:
         python-version: ${{ matrix.python }}
     - name: Get dependencies
@@ -170,10 +170,10 @@ jobs:
     needs: linux_wheels
     steps:
       - uses: actions/checkout@v4.2.2
-      - name: Set up Python 3.x
+      - name: Set up Python 3.13
         uses: actions/setup-python@v5.4.0
         with:
-          python-version: 3.x
+          python-version: 3.13  # 3.14 fails!
       - uses: actions/download-artifact@v4.2.1
         with:
           pattern: py_wheel-*