[FL-1989] CI: bootloader & firmware JSON manifests (#786)

* [FL-1989] CI: bootloader & firmware JSON manifests
* CI: reorder steps

Co-authored-by: あく <alleteam@gmail.com>

docker/Dockerfile

@@ -15,6 +15,7 @@ RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install --no-instal
         libxml2-dev \
         libxslt1-dev \
         zlib1g-dev \
+        jq \
         wget && \
     apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*