gitlab-ci: Configure xorgproto build from source

We need newer xorgproto than what's in fedora as we depend on inputproto
2.3.99.1 or newer.

.gitlab-ci.yml

@@ -34,6 +34,13 @@ fedora@container_build:
 .default_build:
   stage: build
   script:
+    # we require at least inputproto >= 2.3.99.1 which has been released in xorgproto 2021.5
+    - git clone https://gitlab.freedesktop.org/xorg/proto/xorgproto.git --depth 1 --branch=xorgproto-2021.5
+    - pushd xorgproto
+    - ./autogen.sh
+    - make -j${FDO_CI_CONCURRENT:-4} install
+    - popd
+    - rm -rf xorgproto
     - mkdir _builddir _inst
     - pushd _builddir > /dev/null
     - ../autogen.sh --prefix=$(realpath ../_inst) --disable-silent-rules