Valgrind no longer supports --db-attach=yes. (GH-18568) (#18576)

(cherry picked from commit c0cb8beb389da3ba67ad31b1ecc95e100b6292ab)

Co-authored-by: Stefan Krah <skrah@bytereef.org>

Co-authored-by: Stefan Krah <skrah@bytereef.org>
diff --git a/Modules/_decimal/tests/runall-memorydebugger.sh b/Modules/_decimal/tests/runall-memorydebugger.sh
index 1832884..29b7723 100755
--- a/Modules/_decimal/tests/runall-memorydebugger.sh
+++ b/Modules/_decimal/tests/runall-memorydebugger.sh
@@ -18,7 +18,7 @@
 CONFIGS_32="ppro ansi32 ansi-legacy universal"
 
 VALGRIND="valgrind --tool=memcheck --leak-resolution=high \
-          --db-attach=yes --suppressions=Misc/valgrind-python.supp"
+          --suppressions=Misc/valgrind-python.supp"
 
 # Get args
 case $@ in