fix(compat.el): Package-Requires "seq" = 2.3 -> 2.23

I believe there was an unfortunate typo for the `Package-Requires:` in `compat.el` and it was probably intended to be `(seq "2.23")` [which exists and was released on 2021-Sep-25](https://elpa.gnu.org/packages/seq.html), instead of `(seq "2.3")` which [does not exist and cannot be met](https://git.savannah.gnu.org/cgit/emacs.git/tree/lisp/emacs-lisp/seq.el). If the intent was instead to depend on `seq=2.24`, please ignore this pull request. If you prefer that I open another one if that's the case let me know. ### Goal Set the correct requirement for `seq`. ### Issue with the dependency It seems that in Emacs-29.1, given new behavior of `package-install` when considering builtin packages, it has the unfortunate consequence of forcing the package `seq` to be downloaded and install from ELPA, _even when it shouldn't_ (because Emacs-29.1 already has the latest version). Other versions of Emacs seem unaffected. #### Steps to reproduce The step below demonstrate that installing `compat` affects the computation of dependencies in `package.el`, causing it to return `seq` as part of the list of packages to install (even if it's not necessary), as demonstrated when `compat` is not present. When compat is not installed: ``` emacs --no-site-file --batch \ --eval "(progn \ (require 'package) \ (setq package-user-dir \"~/tmp-cache\") \ (add-to-list 'package-archives '(\"melpa\" . \"http://melpa.org/packages/\")) \ (add-to-list 'package-archives '(\"nongnu\" . \"https://elpa.nongnu.org/nongnu/\")) \ (package-initialize) \ (package-refresh-contents) \ (print (mapcar #'package-desc-name (package-compute-transaction () (list (list 'git-commit))))))" ... (compat with-editor transient git-commit) ``` With compat being installed first, `package.el` now requires `seq` to be downloaded too: ``` emacs --no-site-file --batch \ --eval "(progn \ (require 'package) \ (setq package-user-dir \"~/tmp-cache\") \ (add-to-list 'package-archives '(\"melpa\" . \"http://melpa.org/packages/\")) \ (add-to-list 'package-archives '(\"nongnu\" . \"https://elpa.nongnu.org/nongnu/\")) \ (package-initialize) \ (package-refresh-contents) \ (package-install 'compat) \ (print (mapcar #'package-desc-name (package-compute-transaction () (list (list 'git-commit))))))" ... Package ‘compat’ installed. (with-editor seq transient git-commit) ```