scripts: use latest FSharpLint prerelease version

In runFshrapLint.fsx because it includes [1], that fixes bug
in rule 49 (PublicValuesNames), which caused CI failure due to
false positive on deleteAsset function in script
deleteAssetsFromOldReleases.fsx.

Contains failing CI.

[1] fsprojects/FSharpLint#796

Author: webwarrior-ws

scripts/runFSharpLint.fsx

@@ -9,7 +9,7 @@ open Fsdk
 
 #load "../src/FileConventions/Helpers.fs"
 
-let version = "0.26.4"
+let version = "0.26.9--date20251224-1009.git-f84ead9"
 
 let targetSol =
     let args = Fsdk.Misc.FsxOnlyArguments()