Eglot: version strings must start with numbers (bug#62718)

Eglot: version strings must start with numbers (bug#62718)

Even though Eglot is a :core ELPA package and as such is on a
different release cycle than Emacs proper, the version strings used in
'defcustom' and 'make-obsolete' must still follow the numeric format.

* lisp/progmodes/eglot.el (eglot-report-progress): Adjust :version.
(eglot-lsp-abiding-column)
(eglot-current-column)
(eglot-current-column-function)
(eglot-move-to-current-column)
(eglot-move-to-lsp-abiding-column)
(eglot-move-to-column-function)
(eglot-ignored-server-capabilites)
(eglot-manual)
(eglot--managed-mode-hook): Update "obsolete" spec.