Update 1 NuGet dependencies

***NO_CI***

Author: nfbot

nanoFramework.Json.Benchmark/nanoFramework.Json.Benchmark.nfproj

@@ -44,8 +44,8 @@
     <Reference Include="mscorlib, Version=1.15.6.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.CoreLibrary.1.15.5\lib\mscorlib.dll</HintPath>
     </Reference>
-    <Reference Include="nanoFramework.Benchmark, Version=1.0.80.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
-      <HintPath>..\packages\nanoFramework.Benchmark.1.0.80\lib\nanoFramework.Benchmark.dll</HintPath>
+    <Reference Include="nanoFramework.Benchmark, Version=1.0.81.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
+      <HintPath>..\packages\nanoFramework.Benchmark.1.0.81\lib\nanoFramework.Benchmark.dll</HintPath>
     </Reference>
     <Reference Include="nanoFramework.Logging, Version=1.1.120.0, Culture=neutral, PublicKeyToken=c07d481e9758c731">
       <HintPath>..\packages\nanoFramework.Logging.1.1.120\lib\nanoFramework.Logging.dll</HintPath>

nanoFramework.Json.Benchmark/packages.config

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
-  <package id="nanoFramework.Benchmark" version="1.0.80" targetFramework="netnano1.0" />
+  <package id="nanoFramework.Benchmark" version="1.0.81" targetFramework="netnano1.0" />
   <package id="nanoFramework.CoreLibrary" version="1.15.5" targetFramework="netnano1.0" />
   <package id="nanoFramework.Logging" version="1.1.120" targetFramework="netnano1.0" />
   <package id="nanoFramework.Runtime.Native" version="1.7.1" targetFramework="netnano1.0" />

nanoFramework.Json.Benchmark/packages.lock.json

@@ -4,9 +4,9 @@
     ".NETnanoFramework,Version=v1.0": {
       "nanoFramework.Benchmark": {
         "type": "Direct",
-        "requested": "[1.0.80, 1.0.80]",
-        "resolved": "1.0.80",
-        "contentHash": "2aSEfktojZuG0Zs1b1tox3/h8xbmn9ON1SsKHV3rYlI9pjIc0ELveD6NCDyMZh3yBYtF1MqZZJGVLESqP6aYTQ=="
+        "requested": "[1.0.81, 1.0.81]",
+        "resolved": "1.0.81",
+        "contentHash": "MraCs+hjBZy3cT/d0goTCZs/K+zMljkr70e0GHFgu9BqkXuxXc05xQy5wjkr6JaRjzujF1UoJTmq3dvYK1lCbg=="
       },
       "nanoFramework.CoreLibrary": {
         "type": "Direct",