Revert to targeting specific versions for JS

docs/_template/light-dark-theme/partials/scripts.tmpl.partial

@@ -3,8 +3,11 @@
 <script type="text/javascript" src="{{_rel}}styles/docfx.vendor.js"></script>
 <script type="text/javascript" src="{{_rel}}styles/docfx.js"></script>
 <script type="text/javascript" src="{{_rel}}styles/main.js"></script>
-<script src="//code.jquery.com/jquery-latest.js"></script>
-<script src="//cdn.rawgit.com/noelboss/featherlight/master/release/featherlight.min.js" type="text/javascript" charset="utf-8"></script>
+<script
+  src="https://code.jquery.com/jquery-3.3.1.min.js"
+  integrity="sha256-FgpCb/KJQlLNfOu91ta32o/NMZxltwRo8QtmkMRdAu8="
+  crossorigin="anonymous"></script>
+<script src="//cdn.rawgit.com/noelboss/featherlight/1.7.6/release/featherlight.min.js" type="text/javascript" charset="utf-8"></script>
 <script type="text/javascript" src="{{_rel}}styles/plugin-featherlight.js"></script>
 <script type="text/javascript" src="{{_rel}}styles/styleswitcher.js"></script>
 <script type="text/javascript" src="//malsup.github.io/jquery.corner.js"></script>