Require exact version match for WebDriver.

dotnet/Edge.Test/packages.config

@@ -2,5 +2,5 @@
 <packages>
   <package id="MSTest.TestAdapter" version="1.3.2" targetFramework="net45" />
   <package id="MSTest.TestFramework" version="1.3.2" targetFramework="net45" />
-  <package id="Selenium.WebDriver" version="3.141.0" targetFramework="net45" />
+  <package id="Selenium.WebDriver" version="[3.141.0]" targetFramework="net45" />
 </packages>

dotnet/Edge/Microsoft.Edge.SeleniumTools.csproj

@@ -18,7 +18,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Selenium.WebDriver" Version="3.141.0" />
+    <PackageReference Include="Selenium.WebDriver" Version="[3.141.0]" />
   </ItemGroup>
 
 </Project>