Another round of changes to the Github workflows.

* Build ref_gles1 only on Linux, it's of limited use under MacOS and Win.
* Fetch openal-soft from Github, the other mirror had several connection
  problems in the past.
* Always include the latest curl.dll in Windows builds. Since this isn't
  a stripped down build of curl, it's better to have it up to date.
* Make sure that we are on Ubuntu 22.04. Otherwise the binaries wouldn't
  work on newer distros when `ubuntu-latest` becomes Ubuntu 24.04.
* Fix some typos.

.github/workflows/linux.yml

@@ -14,8 +14,8 @@ concurrency:
   group: ${{github.workflow}}-${{github.event_name == 'pull_request' && github.head_ref || github.sha}}
   cancel-in-progress: true
 jobs:
-  build_ubuntu_x64_64:
-    runs-on: ubuntu-latest
+  build_ubuntu_x86_64:
+    runs-on: ubuntu-22.04
     strategy:
       fail-fast: false
       matrix:

.github/workflows/macos.yml

@@ -32,7 +32,6 @@ jobs:
       run: |
         # Public runners come with 3 CPUs.
         gmake -j3
-        gmake -j3 ref_gles1
     - name: Create testbuild package
       run: |
         # Create release directory tree

.github/workflows/win32.yml

@@ -44,7 +44,6 @@ jobs:
       run: |
         # Public runners come with 2 CPUs.
         make -j2
-        make -j2 ref_gles1
     - name: Create testbuild package
       shell: msys2 {0}
       run: |
@@ -71,13 +70,13 @@ jobs:
         unzip -o SDL2-2.30.6-win32-x86.zip
         cp SDL2.dll publish/quake2-win32-${{github.sha}}/
         # openal-soft
-        wget -c https://www.openal-soft.org/openal-binaries/openal-soft-1.23.1-bin.zip
+        wget -c https://github.com/kcat/openal-soft/releases/download/1.23.1/openal-soft-1.23.1-bin.zip
         unzip -o openal-soft-1.23.1-bin.zip
         cp openal-soft-1.23.1-bin/bin/Win32/soft_oal.dll publish/quake2-win32-${{github.sha}}/openal32.dll
         # curl (releases use a custom build curl.dll)
-        wget -c https://curl.se/windows/dl-8.9.1_1/curl-8.9.1_1-win32-mingw.zip
-        unzip -o curl-8.9.1_1-win32-mingw.zip
-        cp curl-8.9.1_1-win32-mingw/bin/libcurl.dll publish/quake2-win32-${{github.sha}}/curl.dll
+        wget -c -O curl-mingw-latest.zip "https://curl.se/windows/latest.cgi?p=win32-mingw.zip"
+        unzip -o curl-mingw-latest.zip
+        cp curl-*-win32-mingw/bin/libcurl.dll publish/quake2-win32-${{github.sha}}/curl.dll
     - name: Upload testbuild package
       uses: actions/upload-artifact@v4
       with: