Update SDL to 2.30.11, use GitHub links for SDL, as it might be faste…

…r on Actions virtual machines

.github/workflows/c-cpp.yml

@@ -66,7 +66,7 @@ jobs:
             targetos: apple
             targetarch: amd64
     env:
-      SDL_VERSION: 2.30.10
+      SDL_VERSION: 2.30.11
       GH_CPU_ARCH: ${{ matrix.targetarch }}
       GH_CROSSCOMPILING: ${{ matrix.cross }}
     steps:

scripts/gha/deps_apple.sh

@@ -2,7 +2,7 @@
 
 cd $GITHUB_WORKSPACE
 
-wget http://libsdl.org/release/SDL2-$SDL_VERSION.dmg -O SDL2.dmg
+wget https://github.com/libsdl-org/SDL/releases/download/release-$SDL_VERSION/SDL2-$SDL_VERSION.dmg -O SDL2.dmg
 hdiutil mount SDL2.dmg
 sudo cp -vr /Volumes/SDL2/SDL2.framework /Library/Frameworks
 

scripts/gha/deps_win32.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
 
-curl http://libsdl.org/release/SDL2-devel-$SDL_VERSION-VC.zip -o SDL2.zip
+curl https://github.com/libsdl-org/SDL/releases/download/release-$SDL_VERSION/SDL2-devel-$SDL_VERSION-VC.zip -o SDL2.zip
 unzip -q SDL2.zip
 mv SDL2-$SDL_VERSION SDL2_VC