vim-patch:8.2.4414: solidity files are not recognized (#17451)

Problem:    Solidity files are not recognized.
Solution:   Add the *.sol pattern. (Dundar Goc, closes vim/vim#9792)
97b231541d

runtime/lua/vim/filetype.lua

@@ -598,6 +598,7 @@ local extension = {
   sl = "slang",
   ice = "slice",
   score = "slrnsc",
+  sol = "solidity",
   tpl = "smarty",
   ihlp = "smcl",
   smcl = "smcl",