Update python on AT next
Update python on AT next

Bump to revision 5157506e043f

The bump includes a commit that causes conflicts with one of the
patches we apply for AT. This commit also changes that patch to a
newer version to overcome those.

Signed-off-by: Matheus Castanho <531577e2ea6a1eef9cdabce582a2b074021a1180@linux.ibm.com>

advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain,advancetoolchain/advance-toolchain