Vim Security Update Fixes Code Execution Risks

This update for vim fixes the following issues:

Update to version 9.2.0780.

Security issues fixed:

- CVE-2026-59856: arbitrary code execution via PHP omni-completion due to improper escaping (bsc#1271194).
- CVE-2026-59857: out-of-bounds write in SAL soundfolding due to improper bounds check (bsc#1271195).
- CVE-2026-59858: arbitrary code execution via C omni-completion due to improper escaping (bsc#1271193).

Other updates and bugfixes:

- Version 9.2.0780 changelog:
* filetype detect missing from completion (9.2.0726).
* popup images not rendered correctly when unfocused (9.2.0727).
* filetype: supertux info pattern is relative to current dir
(9.2.0728).
* % skips parens on continued quoted lines (9.2.0729).
* GTK4 GUI tabline is not updated (9.2.0730).
* GTK4 GUI scrollbar size not updated when restoring a session
(9.2.0731).
* session: terminal restored using absolute columns/rows (9.2.0732).
* GTK3: GUI slow on X11 since dropping the alpha channel (9.2.0733).
* function pointer passed to STRNCMP() instead of a length
(9.2.0734).
* tests: comment test can be improved (9.2.0737).
* completion: 'autocompletedelay' blocks the main loop and drops
autocommands (9.2.0739).
* GTK4: scrollbar wrongly displayed (9.2.0740).
* complete_check() does not return TRUE for mapped input (9.2.0741).
* filetype: SSH keys and related filetypes not recognized (9.2.0742).
* string macros silently accept a size of the wrong type (9.2.0743).
* popup_atcursor() closes immediately on white space (9.2.0744).
* cscope: connection leak when growing the array fails (9.2.0747).
* 'autocompletedelay' interferes with CTRL-G U (9.2.0748).
* 'autocompletedelay' interferes with i_CTRL-K (9.2.0749).
* completion: 'autocompletedelay' deferral leaks state (9.2.0750).
* GTK3 GUI is slow under Wayland (9.2.0751).
* GTK4: drag-and-drop does not support HTML (9.2.0752).
* GTK GUI deferred redraw skipped on 'lazyredraw' (9.2.0753).
* repeated completion length lookup in search_for_exact_line
(9.2.0754).
* 'autocomplete' behaves inconsistently when recording (9.2.0755).
* session with multiple tabpages sets 'winminheight' to 0 (9.2.0756).
* tests: test_popupwin fails with zsh because of the prompt
(9.2.0757).
* pum: no opacity when background not set for Popup menu group
(9.2.0758).
* some code for 'autocompletedelay' is no longer needed (9.2.0759).
* compiler warning for using potentially uninitialized var
(9.2.0760).
* runtime(netrw): Unix: unable to open '\' file (9.2.0761).
* duplicated sub-option name check in :set completion (9.2.0762).
* tests: style issue in test_plugin_netrw (9.2.0763).
* compiler warning about unused function (9.2.0764).
* popup: opacity popup over a terminal is not cleared when moved
(9.2.0765).
* quick_tab entries for empty letters point to the wrong index
(9.2.0766).
* legacy/vim9cmd modifiers do not set script version for options
values (9.2.0767).
* legacy/vim9cmd modifiers are not exclusive (9.2.0768).
* conversion to utf-16be using iconv is inconsistent (9.2.0769).
* dict_add_dict() has inconsistent ownership on failure (9.2.0770).
* dict_add_list() has inconsistent ownership on failure (9.2.0771).
* Vim9: null dereference inside alloc_type() (9.2.0772).
* memory leak in evalfunc.c on alloc failure (9.2.0773).
* memory leak in f_getscriptinfo() on alloc failure (9.2.0774).
* memory leak in highlight_get_info() on alloc failure (9.2.0775).
* memory leak in sign_getlist() on alloc failure (9.2.0776).
* memory leak in add_defer() on alloc failure (9.2.0777).
* memory leak in compile_dict() on alloc failure (9.2.0778).
* memory leak in type_name_func() on alloc failure (9.2.0779).
* memory leak in evalvars.c on alloc failure (9.2.0780).