Add valgrind suppressions for ubuntu ARM

This stems from a mismatched free() context causing 3 errors with all LLVM versions (13, 17, 18, 19). The suppression files are made seperate so we do not regress mismatched free() memory errors on non-ARM builds

.github/workflows/Ubuntu.yml

@@ -643,7 +643,7 @@ jobs:
     
         echo "Running valgrind on passing tests"
         CLANG_VERSION="${{ matrix.clang-runtime }}"
-        SUPPRESSION_FILE="../etc/clang${CLANG_VERSION}-valgrind.supp"
+        SUPPRESSION_FILE="../etc/clang${CLANG_VERSION}-valgrind$( [[ "${{ matrix.os }}" == *"arm"* ]] && echo "_arm" ).supp"
         valgrind --show-error-list=yes --error-exitcode=1 --track-origins=yes --gen-suppressions=all --suppressions="${SUPPRESSION_FILE}" --suppressions=../etc/valgrind-cppyy-cling.supp python -m pytest -m "not xfail" -sv -ra
         export RETCODE=+$?
         echo ::endgroup::

etc/clang13-valgrind_arm.supp

@@ -0,0 +1,34 @@
+{
+   Cppyy Suppression
+   Memcheck:Free
+   fun:free
+   obj:*
+   fun:_ZNK3Cpp7JitCall6InvokeEPvNS0_7ArgListES1_
+   fun:_ZL11WrapperCallPvmS_S_S_
+   fun:_ZN5Cppyy5CallVEPvS0_mS0_
+   fun:_ZL8GILCallVPvS_PN8CPyCppyy11CallContextE
+   fun:_ZN8CPyCppyy12_GLOBAL__N_112VoidExecutor7ExecuteEPvS2_PNS_11CallContextE
+   fun:_ZN8CPyCppyy9CPPMethod11ExecuteFastEPvlPNS_11CallContextE
+   fun:_ZN8CPyCppyy9CPPMethod7ExecuteEPvlPNS_11CallContextE
+   fun:_ZN8CPyCppyy11CPPFunction4CallERPNS_11CPPInstanceEPKP7_objectmS5_PNS_11CallContextE
+   fun:_ZN8CPyCppyy12_GLOBAL__N_1L13mp_vectorcallEPNS_11CPPOverloadEPKP7_objectmS4_
+   fun:_PyObject_VectorcallTstate
+   fun:PyObject_Vectorcall
+}
+
+# To address:
+# Mismatched free() / delete / delete []
+#    at 0x4878480: free (vg_replace_malloc.c:989)
+#    by 0x2C82F02B: ???
+#  Address 0x258d7f70 is 0 bytes inside a block of size 6 alloc'd
+#    at 0x4877194: operator new[](unsigned long) (vg_replace_malloc.c:729)
+#    by 0x2C82B057: ???
+# 
+# On Ubuntu ARM, that also causes certain tests to fail.
+
+{
+   Mismatched free()
+   Memcheck:Free
+   fun:free
+   obj:*
+}