Fix file name completion with Tramp on MS Windoes

Fix file name completion with Tramp on MS Windoes

* doc/misc/trampver.texi:
* lisp/net/trampver.el (tramp-version): Adapt Tramp versions.

* lisp/net/tramp.el (tramp-build-completion-file-name-regexp):
Do not use `tramp-volume-letter-regexp'.  (Bug#68320)
(tramp-completion-handle-expand-file-name): Simplify regexp.

* test/lisp/net/tramp-tests.el (tramp-test26-file-name-completion)
(tramp-test26-interactive-file-name-completion): Run also on MS Windows.

(cherry picked from commit cf887b7eb08a7ed0859b3fa2e1c4e54d787d2f9d)