Bump Dojo from 1.16.5 to 1.17.3.

This should help with some of the security findings.

lib/dojo/json5/LICENSE.md

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+MIT License
+
+Copyright (c) 2012-2018 Aseem Kishore, and [others].
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+[others]: https://github.com/json5/json5/contributors

lib/dojo/json5/README.md

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+These modules are adapted from the [JSON5](https://github.com/json5/json5) project. JSON5 was adopted by
+the Dojo Toolkit for use by `dojo/parser` to facilitate parsing data attributes without using the unsafe
+JavaScript function `eval()`. As such only the parsing related modules from JSON5 are included.
+
+Updates from the JSON5 project can be incorporated into the Dojo Toolkit with the following process:
+
+* Clone the [JSON5 repository](https://github.com/json5/json5.git)
+* Convert the relevant files to ES5 syntax with TypeScript's compiler:
+```bash
+tsc lib/parse.js lib/unicode.js lib/util.js --allowJs --module ES6 --outDir dojo --removeComments --target ES5
+```
+* Visually compare the existing modules in `dojo/json5` with the newly converted modules to see what changes will need
+to be made
+* Copy the files from the `json5/dojo` folder to the `dojo/json5` folder
+* Manual updates:
+  * IMPORTANT: wrap the `lexStates` object property `default:` in quotes => `'default':`
+  * convert indentation to tabs in each module
+  * remove any trailing commas
+  * convert each module to AMD syntax
+* Update `json5/parse.js` to use `dojo/string` methods for ES5 String methods:
+  * require `'../string'` as `dstring`
+  * replace calls to `codePointAt` with `dstring.codePointAt(str, position)`
+  * replace calls to `String.fromCodePoint` with `dstring.fromCodePoint`
+* Run Dojo's JSON5 tests to ensure the updates were successful:
+  * `dojo/node_modules/intern-geezer/client.html?config=tests/dojo.intern&suites=tests/unit/json5`
+* Update the line below recording the most recent update
+
+Current as of 2020-06-12, commit [32bb2cd](https://github.com/json5/json5/commit/32bb2cdae4864b2ac80a6d9b4045efc4cc54f47a)

lib/dojo/json5/util.js

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+/*
+	Copyright (c) 2004-2016, The JS Foundation All Rights Reserved.
+	Available via Academic Free License >= 2.1 OR the modified BSD license.
+	see: http://dojotoolkit.org/license for details
+*/
+
+//>>built
+define("dojo/json5/util",["./unicode"],function(_1){return {isSpaceSeparator:function(c){return typeof c==="string"&&_1.Space_Separator.test(c);},isIdStartChar:function(c){return typeof c==="string"&&((c>="a"&&c<="z")||(c>="A"&&c<="Z")||(c==="$")||(c==="_")||_1.ID_Start.test(c));},isIdContinueChar:function(c){return typeof c==="string"&&((c>="a"&&c<="z")||(c>="A"&&c<="Z")||(c>="0"&&c<="9")||(c==="$")||(c==="_")||(c==="‌")||(c==="‍")||_1.ID_Continue.test(c));},isDigit:function(c){return typeof c==="string"&&/[0-9]/.test(c);},isHexDigit:function(c){return typeof c==="string"&&/[0-9A-Fa-f]/.test(c);},};});