Update 1 NuGet dependencies

Author: nfbot

nanoFramework.System.Net.nuspec

@@ -20,7 +20,7 @@ This package requires a target with System.Net v$nativeVersion$ (checksum $check
     <tags>nanoFramework C# csharp netmf netnf networking</tags>
     <dependencies>
       <dependency id="nanoFramework.CoreLibrary" version="1.15.5" />
-      <dependency id="nanoFramework.Runtime.Events" version="1.11.15" />
+      <dependency id="nanoFramework.Runtime.Events" version="1.11.18" />
       <dependency id="nanoFramework.System.Text" version="1.2.54" />
       <dependency id="nanoFramework.System.Threading" version="1.1.32" />
       <dependency id="nanoFramework.System.IO.Streams" version="1.1.59" />

nanoFramework.System.Net/System.Net.nfproj

@@ -137,8 +137,8 @@
       <HintPath>..\packages\nanoFramework.CoreLibrary.1.15.5\lib\mscorlib.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="nanoFramework.Runtime.Events, Version=1.11.15.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Runtime.Events.1.11.15\lib\nanoFramework.Runtime.Events.dll</HintPath>
+    <Reference Include="nanoFramework.Runtime.Events, Version=1.11.18.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.Runtime.Events.1.11.18\lib\nanoFramework.Runtime.Events.dll</HintPath>
       <Private>True</Private>
     </Reference>
     <Reference Include="nanoFramework.System.Text, Version=1.2.54.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">

nanoFramework.System.Net/packages.config

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="nanoFramework.CoreLibrary" version="1.15.5" targetFramework="netnano1.0" />
-  <package id="nanoFramework.Runtime.Events" version="1.11.15" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Runtime.Events" version="1.11.18" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.IO.Streams" version="1.1.59" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Text" version="1.2.54" targetFramework="netnano1.0" />
   <package id="nanoFramework.System.Threading" version="1.1.32" targetFramework="netnano1.0" />

nanoFramework.System.Net/packages.lock.json

@@ -10,9 +10,9 @@
       },
       "nanoFramework.Runtime.Events": {
         "type": "Direct",
-        "requested": "[1.11.15, 1.11.15]",
-        "resolved": "1.11.15",
-        "contentHash": "3uDNSTfiaewDAyi6fOMWYru0JCn/gr8DEv+Ro/V12SzojU9Dyxl5nSVOBtBXts7vErfIthB6SPiK180AMnrI8A=="
+        "requested": "[1.11.18, 1.11.18]",
+        "resolved": "1.11.18",
+        "contentHash": "t0XpUkdyBBBv/0S4oGx3yUJG1iPYWc38odvZW8mVoioSxZOJrRkRHpNfwYxTxtP4LIEyyesOPEH42d05FHfHzA=="
       },
       "nanoFramework.System.IO.Streams": {
         "type": "Direct",