Update RESTler version to 8.5.0 (#497)

Author: marina-p

ci_build_pipelines/variables/version-variables.yml

@@ -2,7 +2,7 @@ variables:
   - name: version.major
     value: 8
   - name: version.minor
-    value: 4
+    value: 5
   - name: devRevision
     value: 0
   - name: buildPlatform

src/driver/Program.fs

@@ -14,7 +14,7 @@ open Microsoft.FSharpLu.Diagnostics.Process
 open Restler.Telemetry
 
 [<Literal>]
-let CurrentVersion = "8.4.0"
+let CurrentVersion = "8.5.0"
 let EngineErrorCode = -2
 
 let exitRestler status =