gitlab-ci: Install pkg-config on FreeBSD

Without this change the autotools build system fails to find glib and
reports an error. The CMake build worked prior to this change since CMake
has fallback logic to find glib even without pkg-config.

.gitlab-ci.yml

@@ -72,7 +72,7 @@ variables:
     BUILD_OS: freebsd
     BUILD_ARCH: "x86_64"
     FDO_DISTRIBUTION_VERSION: '13.0'
-    FDO_DISTRIBUTION_TAG: '2022-08-08.0'  # Bump this version on every ci-install.sh change
+    FDO_DISTRIBUTION_TAG: '2022-08-08.1'  # Bump this version on every ci-install.sh change
     FDO_REPO_SUFFIX: "$BUILD_OS/$BUILD_ARCH"
 
 .cmake-common:

tools/ci-install.sh

@@ -323,6 +323,7 @@ case "$ci_distro" in
             libtool
             libX11
             libxslt
+            pkgconf
             xmlto
         )
         $sudo pkg install -y "${packages[@]}"