Python build with optimization flags

Author: schnellerhase

.github/workflows/valgrind.yml

@@ -39,7 +39,7 @@ jobs:
       - name: Build Python
         working-directory: cpython
         run: |
-          ./configure --with-valgrind
+          ./configure --with-valgrind --enable-optimizations --with-lto
           make -j4 all
           sudo make install