CI(cirrus): Install "ice37" package instead of "ice"

"ice37" provides ZeroC Ice 3.7.10 (currently the latest).

"ice" provides ZeroC Ice 3.6.5.

.cirrus.yml

@@ -8,7 +8,7 @@ freebsd_instance:
 freebsd_task:
   pkg_script:
   - pkg update && pkg upgrade -y
-  - pkg install -y git ninja pkgconf cmake qt5-buildtools qt5-qmake qt5-linguisttools qt5-concurrent qt5-network qt5-xml qt5-sql qt5-svg qt5-testlib boost-libs libsndfile protobuf ice avahi-libdns poco opus
+  - pkg install -y git ninja pkgconf cmake qt5-buildtools qt5-qmake qt5-linguisttools qt5-concurrent qt5-network qt5-xml qt5-sql qt5-svg qt5-testlib boost-libs libsndfile protobuf ice37 avahi-libdns poco opus
   fetch_submodules_script: git submodule --quiet update --init --recursive
   build_script:
   - mkdir build && cd build