Enable libmongocrypt support in libmongoc

Author: alcaeus

.github/actions/linux/build-libmongoc/action.yml

@@ -29,7 +29,8 @@ runs:
       run: cmake -S "mongo-c-driver-${LIBMONGOC_VERSION}" -B _build \
         -D CMAKE_BUILD_TYPE=RelWithDebInfo \
         -D BUILD_VERSION="${LIBMONGOC_VERSION}" \
-        -D ENABLE_MONGOC=ON
+        -D ENABLE_MONGOC=ON \
+        -D MONGOC_ENABLE_CLIENT_SIDE_ENCRYPTION=ON
       env:
         LIBMONGOC_VERSION: ${{ inputs.version }}