vim: Import v9.1.1340

* 9.1.1340: cannot complete :filetype arguments
* 9.1.1339: missing out-of-memory checks for enc_to_utf16()/utf16_to_enc()
* 9.1.1338: Calling expand() interferes with cmdcomplete_info()
* 9.1.1337: Undo corrupted with 'completeopt' "preinsert" when switching buffer

Author: github-actions[bot]

gitlog.txt

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-* [runtime(yaml): fix wrong order of undo\_ftplugin suboptions](https://github.com/vim/vim/commit/229f79c1683fa52159e692ff8b53449e117a38b2)\n* [runtime(make): do not automatically indent after a special target](https://github.com/vim/vim/commit/7bc988067eff6657e6f047491cadb32e0829544d)\n* [9.1.1336](https://github.com/vim/vim/commit/dd776dd5f0e114d59c9e309f9026c69a1243b895): comment plugin does not support case-insensitive 'commentstring'\n* [9.1.1335](https://github.com/vim/vim/commit/362be6ba2700e864f3c755d2366a8088bead21fa): Coverity complains about Null pointer dereferences\n* [9.1.1334](https://github.com/vim/vim/commit/d847b241f5472477db8b76a4a630ae66bd33f8f2): Coverity complains about unchecked return value\n* [9.1.1333](https://github.com/vim/vim/commit/7dfc9e6121e85084fc428e915c717cbe0c8b2acd): Coverity: complains about unutilized variable\n* [9.1.1332](https://github.com/vim/vim/commit/69e6ab6db3709d137508fec34d1fcadc69cef375): Vim9: segfault when using super within a lambda\n* [9.1.1331](https://github.com/vim/vim/commit/5c3d1e3258872381831f419765f2969f45caaa11): Leaking memory with cmdcomplete()\n* [runtime(vim): Update base-syntax, improve :autocmd highlighting](https://github.com/vim/vim/commit/fa3b1043c6ac38df5e58f7444f478e1ddd4000a6)
+* [9.1.1340](https://github.com/vim/vim/commit/a3422aa3170d49a7c3d1e6cd4242b86e42ef3945): cannot complete :filetype arguments\n* [9.1.1339](https://github.com/vim/vim/commit/031f2273cb8c19aeb4f40bd56362cff0b338b84f): missing out-of-memory checks for enc\_to\_utf16()/utf16\_to\_enc()\n* [9.1.1338](https://github.com/vim/vim/commit/ec270a5f5554c62517246281afb547b5c2fe65af): Calling expand() interferes with cmdcomplete\_info()\n* [9.1.1337](https://github.com/vim/vim/commit/1343681aba56d49c16d3070615b8ece7f8b0d1bd): Undo corrupted with 'completeopt' "preinsert" when switching buffer