[BOT] Update openroad_app (#1681)

openroad_app -> 6840b7481d49c83870f79646cf979e66f22f6833
~ apply patch for sta crash

dependencies/tool_metadata.yml

@@ -57,7 +57,7 @@
   in_install: false
 - name: openroad_app
   repo: https://github.com/The-OpenROAD-Project/OpenROAD
-  commit: 1a1617d908d2ebdb731de9ab4e3d9fd93a6dcf97
+  commit: 6840b7481d49c83870f79646cf979e66f22f6833
   in_install: false
 - name: git
   repo: https://github.com/git/git

docker/openroad_app/Dockerfile

@@ -74,6 +74,9 @@ RUN curl -L ${OPENROAD_APP_REPO}/tarball/${OPENROAD_APP_COMMIT} | tar -xzC . --s
 COPY ./utils.py .
 RUN python3 ./utils.py fetch-submodules-from-tarballs ${OPENROAD_APP_REPO} ${OPENROAD_APP_COMMIT}
 
+# liberty missing template seg fault fix for sky130 ff lib
+RUN cd src/sta && curl -L https://github.com/jjcherry56/OpenSTA/commit/974d9f43e7ba15a56f8534b36d7a107ef690602d.diff | patch --strip=1
+
 # Build OpenROAD
 RUN sed -i "s/GITDIR-NOTFOUND/${OPENROAD_APP_COMMIT}/" cmake/GetGitRevisionDescription.cmake
 RUN sed -i "s/-m64//" src/par/CMakeLists.txt