Fix GCC 13 warnings #3470

Job	Run time
ubuntu-clang-deprecated Debug	23m 10s
ubuntu-clang-deprecated Release	25m 1s
ubuntu-clang-quaternions Debug	23m 26s
ubuntu-clang-quaternions Release	23m 55s
ubuntu-clang-tbb Debug	23m 58s
ubuntu-clang-tbb Release	26m 21s
ubuntu-clang-cayleymap Debug	24m 12s
ubuntu-clang-cayleymap Release	24m 34s
ubuntu-clang-system-libs Debug	24m 48s
ubuntu-clang-system-libs Release	24m 26s
ubuntu-no-boost Debug	19m 9s
ubuntu-no-boost Release	20m 42s
ubuntu-no-unstable Debug	20m 4s
ubuntu-no-unstable Release	20m 33s
	5h 24m 19s

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