Update all dependencies (#3089)

* Update all dependencies

* Update NodeJS version for Travis to 10

Starting from v26.0.0 of Jest [1] a function native to NodeJS 10 is 
being used, therefore using NodeJS 8 in Travis CI is no longer 
sufficient.

--
1. https://github.com/facebook/jest/blob/master/CHANGELOG.md#2600

Co-authored-by: Renovate Bot <bot@renovateapp.com>
Co-authored-by: Eric Cornelissen <ericornelissen@gmail.com>

.travis.yml

@@ -6,7 +6,7 @@ jobs:
     - stage: "Test"
       name: "Lint"
       language: node_js
-      node_js: 8
+      node_js: 10
       script:
         - npm run jsonlint
         - npm run svglint
@@ -21,7 +21,7 @@ jobs:
         - jekyll build
     - name: "Test package"
       language: node_js
-      node_js: 8
+      node_js: 10
       script:
         - npm run test
 
@@ -40,7 +40,7 @@ jobs:
         token: "$GITHUB_TOKEN"
     - name: "NPM Package"
       language: node_js
-      node_js: 8
+      node_js: 10
       if: branch = master
 
       deploy:

package.json

@@ -18,13 +18,13 @@
   "author": "Simple Icons Collaborators",
   "license": "CC0-1.0",
   "devDependencies": {
-    "editorconfig-checker": "3.0.4",
-    "jest": "25.2.7",
+    "editorconfig-checker": "3.0.5",
+    "jest": "26.0.1",
     "jsonlint2": "1.7.1",
     "npm-run-all": "4.1.5",
     "svglint": "1.0.5",
     "svgo": "1.3.2",
-    "uglify-js": "3.8.1"
+    "uglify-js": "3.9.3"
   },
   "scripts": {
     "build": "node scripts/build-package.js",