python-embedded-interpreter: fix line breakpoint

Breaking in line 9 was actually out of main() context
which might cause issues. Corrected to point to line 8

python-embedded-interpreter/test.sh

@@ -6,7 +6,7 @@ rpm -q --requires "$LLDB_PACKAGE" | grep python3-lldb
 # Sanity test
 g++ -g test.cpp
 
-lldb -b -o 'breakpoint set --file test.cpp --line 9' \
+lldb -b -o 'breakpoint set --file test.cpp --line 8' \
   -o run -o 'p i' -o 'p f'\
   -- a.out | tee lldb.log