oss-fuzz: disable debug info

with clang-15 still had issues with that, which show up with LTO.
I don't *think* oss-fuzz needs debug info for anything, so let's disable it.

.ci/oss-fuzz.sh

@@ -60,7 +60,7 @@ mkdir build
 cd build
 
 cmake \
-  -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON \
+  -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON -DRAWSPEED_ENABLE_DEBUG_INFO=OFF \
   -DBINARY_PACKAGE_BUILD=ON -DWITH_OPENMP=$WITH_OPENMP \
   -DUSE_BUNDLED_LLVMOPENMP=ON -DALLOW_DOWNLOADING_LLVMOPENMP=ON \
   -DWITH_PUGIXML=OFF -DUSE_XMLLINT=OFF -DWITH_JPEG=OFF -DWITH_ZLIB=OFF \