vim: Import v9.1.0686

* translation(it): Fix filemode of Italian manpages
* runtime(doc): Update outdated man.vim plugin information
* runtime(zip): simplify condition to detect MS-Windows

Author: github-actions[bot]

gitlog.txt

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-* [9.1.0686](https://github.com/vim/vim/commit/7790ea0c680a9f951a86066e5940ec16b2333c9a): zip-plugin has problems with special characters\n* [runtime(pandoc): escape quotes in &errorformat for pandoc](https://github.com/vim/vim/commit/5f5f2832f5dcf845a93f7f62c1daf6cba9c17989)\n* [translation(it): updated Italian manpage](https://github.com/vim/vim/commit/9beccaf779f8f153f351001d4f7acef2b7b2d1d7)\n* [9.1.0685](https://github.com/vim/vim/commit/9e795852f31f1eab52e776bad27f8a169cb15238): too many strlen() calls in usercmd.c\n* [runtime(doc): fix grammar in :h :keeppatterns](https://github.com/vim/vim/commit/e44e64492cf0a99191826b05ea5ee80b3a5fb3f5)\n* [runtime(pandoc): refine pandoc compiler settings](https://github.com/vim/vim/commit/d55e698fa02195bf451b072eb2fb20cfbf7bddf5)\n* [9.1.0684](https://github.com/vim/vim/commit/753794bae8a9401903b82e5c5d1f35a106aa912a): completion is inserted on Enter with "noselect"\n* [translation(ru): update man pages](https://github.com/vim/vim/commit/12333bae0175edda16ea2e1201e12224989e3ef2)\n* [9.1.0683](https://github.com/vim/vim/commit/0fd1cb1b1fc90b68cb37f71e65289eadac3588a6): mode() returns wrong value with \<Cmd> mapping
+* [translation(it): Fix filemode of Italian manpages](https://github.com/vim/vim/commit/4a0dc29e5fb4f59712f6f336b88bf1f18d846858)\n* [runtime(doc): Update outdated man.vim plugin information](https://github.com/vim/vim/commit/fd01eb21e545c1c5dc8dc894237f19a0ab2b537f)\n* [runtime(zip): simplify condition to detect MS-Windows](https://github.com/vim/vim/commit/bc29ea62861052b35781031173a67d7d577be068)