runtime(vim): Update base-syntax, fix inline Vim9 dict comments at SOL

Match Vim9 comments at start-of-line (no leading whitespace) in
dictionaries, lists and parenthesised expressions and argument lists.

Addresses https://github.com/vim/vim/pull/14975#issuecomment-2832643115

Report and fix by Aliaksei Budavei.

closes: #17211

Signed-off-by: Doug Kearns <dougkearns@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/syntax/vim.vim b/runtime/syntax/vim.vim
index 741ec81..2bf0f7d 100644
--- a/runtime/syntax/vim.vim
+++ b/runtime/syntax/vim.vim
@@ -403,7 +403,7 @@
 
 " Operators: {{{2
 " =========
-syn cluster	vimOperGroup	contains=@vimContinue,@vimExprList,vim9Comment,vimContinueString
+syn cluster	vimOperGroup	contains=@vimContinue,@vimExprList,vim9Comment,vim9LineComment,vimContinueString
 syn match	vimOper	"\a\@<!!"			skipwhite skipnl nextgroup=@vimOperContinue,@vimExprList,vimSpecFile
 syn match	vimOper	"||\|&&\|[-+*/%.]"		skipwhite skipnl nextgroup=@vimOperContinue,@vimExprList,vimSpecFile
 syn match	vimOper	"?"			skipwhite skipnl nextgroup=@vimOperContinue,@vimExprList,vimContinueString