ci: upgrade FreeBSD to 13.1

FreeBSD doesn't support /latest and /quarterly package repos on EOL
versions. 13.0 reaches EOL on 2022-08-31, so avoid CI breakage.

Author: jbeich

.github/workflows/freebsd.yml

@@ -12,7 +12,7 @@ on:
 
 jobs:
   freebsd:
-    runs-on: macos-10.15
+    runs-on: macos-12
     steps:
     - name: checkout libva
       uses: actions/checkout@v2
@@ -24,7 +24,7 @@ jobs:
       with:
         path: libva-utils
     - name: test
-      uses: vmactions/freebsd-vm@v0.1.5
+      uses: vmactions/freebsd-vm@v0
       with:
         prepare: |
           pkg install -y meson pkgconf libdrm libXext libXfixes wayland