Don't build for just the docs

We only care about the doxygen docs, not about the whole build.

Yes, there are some UML files that we want to build too, but we really
honestly don't need to build everything else for that. Just build the
.puml files

.github/workflows/docs.yml

@@ -12,13 +12,10 @@ jobs:
     - name: install prereqs
       env: 
         DEBIAN_FRONTEND: noninteractive
-      run: sudo apt-get -y install plantuml doxygen autoconf libassuan-dev libtool pkg-config autoconf-archive libpcsclite-dev libssl-dev libcurl4-openssl-dev
-    - name: bootstrap
-      run: ./bootstrap.sh
-    - name: configure
-      run: ./configure --without-gtkvers --disable-dependency-tracking
-    - name: make
-      run: make -j $(( ($(nproc) * 2) - ($(nproc) / 2) ))
+      run: sudo apt-get -y install plantuml doxygen
+    - name: run plantuml
+      working-directory: plugins_tools/eid-viewer/uml
+      run: plantuml -o $(pwd) be-statemach-docs.puml
     - name: run doxygen
       working-directory: doc/sdk/eidviewer
       run: doxygen Doxyfile