bump opendbc: in-memory DBC generation, drop scons build (#37646)

.github/workflows/repo-maintenance.yaml

@@ -68,7 +68,6 @@ jobs:
         git add .
     - name: update car docs
       run: |
-        scons -j$(nproc) --minimal opendbc_repo
         python selfdrive/car/docs.py
         git add docs/CARS.md
     - name: Create Pull Request

SConstruct

@@ -195,7 +195,6 @@ Export('common')
 env_swaglog = env.Clone()
 env_swaglog['CXXFLAGS'].append('-DSWAGLOG="\\"common/swaglog.h\\""')
 SConscript(['msgq_repo/SConscript'], exports={'env': env_swaglog})
-SConscript(['opendbc_repo/SConscript'], exports={'env': env_swaglog})
 
 SConscript(['cereal/SConscript'])