手元に別保存していた2023/06/19版(revision 67400?)でもl.6355で同様に止まってしまいますので，問題はjlreqではなく他のパッケージのアップデートかもしれません．
同時にアップデートされたものをtlmgr.logから拾ってみると
[Thu Feb 15 20:49:13 2024] update: albatross (65647 -> 69879)
[Thu Feb 15 20:51:57 2024] update: arara (68431 -> 69878)
[Thu Feb 15 20:52:27 2024] update: dtk (69504 -> 69873)
[Thu Feb 15 20:52:32 2024] update: easybook (69805 -> 69886)
[Thu Feb 15 20:52:34 2024] update: emotion (69752 -> 69881)
[Thu Feb 15 20:52:41 2024] update: eolang (69391 -> 69868)
[Thu Feb 15 20:52:43 2024] update: exesheet (69688 -> 69885)
[Thu Feb 15 20:53:28 2024] update: fontspec (63386 -> 69880)
[Thu Feb 15 20:53:35 2024] update: francais-bst (68686 -> 69866)
[Thu Feb 15 20:53:37 2024] update: gastex (58505 -> 69877)
[Thu Feb 15 20:53:40 2024] update: gitinfo-lua (68808 -> 69875)
[Thu Feb 15 20:53:46 2024] update: huawei (68336 -> 69871)
[Thu Feb 15 20:53:51 2024] update: jlreq (67400 -> 69887)
[Thu Feb 15 20:53:55 2024] update: kaytannollista-latexia (69468 -> 69876)
[Thu Feb 15 20:54:38 2024] update: l3kernel (69537 -> 69870)
[Thu Feb 15 20:54:44 2024] update: l3packages (68507 -> 69869)
[Thu Feb 15 20:56:56 2024] update: latex-base-dev (68730 -> 69872)
[Thu Feb 15 20:57:55 2024] update: latex-lab-dev (68730 -> 69872)
[Thu Feb 15 20:58:20 2024] update: latex-tools-dev (68730 -> 69872)
[Thu Feb 15 20:58:55 2024] update: lt3luabridge (64801 -> 69867)
[Thu Feb 15 20:58:57 2024] update: lua-placeholders (69568 -> 69874)
[Thu Feb 15 20:59:12 2024] update: nicematrix (69588 -> 69884)
[Thu Feb 15 20:59:28 2024] update: optex (68873 -> 69864)
[Thu Feb 15 21:00:01 2024] update: spbmark (69725 -> 69883)
[Thu Feb 15 21:00:07 2024] update: texlive-scripts (69830 -> 69850)
[Thu Feb 15 21:00:10 2024] update: texlogfilter (62792 -> 69863)
[Thu Feb 15 21:00:52 2024] update: verse (34017 -> 69882)
[Thu Feb 15 21:00:53 2024] auto-install new: pictochrono (69865)
[Thu Feb 15 21:00:55 2024] auto-install new: xfrac (69888)
[Thu Feb 15 21:01:02 2024] update: collection-latexrecommended (69131 -> 69888)
[Thu Feb 15 21:01:04 2024] update: collection-pictures (69409 -> 69865)
でした．