ci/openbsd: bump to 7.7 and remove ffmpeg subproject

.github/workflows/build.yml

@@ -419,10 +419,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Test in OpenBSD VM
-      uses: cross-platform-actions/[email protected]7.0
+      uses: cross-platform-actions/[email protected]8.0
       with:
         operating_system: openbsd
-        version: '7.6'
+        version: '7.7'
         run: |
             sudo pkg_add -U \
                 cmake \
@@ -464,7 +464,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Test in FreeBSD VM
-      uses: cross-platform-actions/[email protected]7.0
+      uses: cross-platform-actions/[email protected]8.0
       with:
         operating_system: freebsd
         version: '14.2'

ci/build-openbsd.sh

@@ -3,24 +3,6 @@ set -e
 
 . ./ci/build-common.sh
 
-# FFmpeg on openBSD (4.4.4) is too old; use a subproject
-rm -rf subprojects
-mkdir -p subprojects
-cat <<EOF > subprojects/ffmpeg.wrap
-[wrap-git]
-url = https://gitlab.freedesktop.org/gstreamer/meson-ports/ffmpeg.git
-revision = meson-7.1
-depth = 1
-[provide]
-libavcodec = libavcodec_dep
-libavdevice = libavdevice_dep
-libavfilter = libavfilter_dep
-libavformat = libavformat_dep
-libavutil = libavutil_dep
-libswresample = libswresample_dep
-libswscale = libswscale_dep
-EOF
-
 meson setup build $common_args \
   -Dffmpeg:vulkan=auto \
   -Dffmpeg:werror=false \