tests: Fix compatibility issue with Python 3.13 in vlog.at. #313

Job	Run time
linux deb no dpdk	4m 41s
dpdk gcc	2m 11s
osx clang --disable-ssl	1m 59s
linux rpm fedora	4m 7s
linux gcc --disable-ssl	1s
linux clang --disable-ssl	1s
linux gcc c99	1s
linux clang c99	1s
linux gcc test	1s
linux clang test asan	1s
linux clang test ubsan	1s
linux gcc test --enable-shared	1s
linux clang test --enable-shared	1s
linux gcc test dpdk	1s
linux clang test dpdk	1s
linux gcc test -ljemalloc	1s
linux clang test -ljemalloc	1s
linux gcc --enable-afxdp	1s
linux clang --enable-afxdp	1s
linux gcc dpdk --enable-shared	1s
linux clang dpdk --enable-shared	1s
linux gcc dpdk-shared	1s
linux clang dpdk-shared	1s
linux gcc dpdk-shared --enable-shared	1s
linux clang dpdk-shared --enable-shared	1s
linux gcc m32 --disable-ssl	1s
	13m 20s

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