Pin dependencies (#6)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

package.json

@@ -2,36 +2,36 @@
   "name": "alejandrofh.es",
   "private": true,
   "devDependencies": {
-    "compass": "^0.1.1",
-    "grunt": "^1.0.4",
-    "grunt-angular-templates": "^1.2.0",
-    "grunt-autoprefixer": "^3.0.4",
-    "grunt-concurrent": "^3.0.0",
-    "grunt-contrib-clean": "^2.0.0",
-    "grunt-contrib-compass": "^1.0.0",
-    "grunt-contrib-concat": "^1.0.1",
-    "grunt-contrib-connect": "^2.0.0",
-    "grunt-contrib-copy": "^1.0.0",
-    "grunt-contrib-cssmin": "^3.0.0",
-    "grunt-contrib-htmlmin": "^3.1.0",
+    "compass": "0.1.1",
+    "grunt": "1.0.4",
+    "grunt-angular-templates": "1.2.0",
+    "grunt-autoprefixer": "3.0.4",
+    "grunt-concurrent": "3.0.0",
+    "grunt-contrib-clean": "2.0.0",
+    "grunt-contrib-compass": "1.1.1",
+    "grunt-contrib-concat": "1.0.1",
+    "grunt-contrib-connect": "2.0.0",
+    "grunt-contrib-copy": "1.0.0",
+    "grunt-contrib-cssmin": "3.0.0",
+    "grunt-contrib-htmlmin": "3.1.0",
     "grunt-contrib-imagemin": "3.1.0",
-    "grunt-contrib-jshint": "^2.1.0",
-    "grunt-contrib-uglify": "^4.0.1",
-    "grunt-contrib-watch": "^1.1.0",
-    "grunt-filerev": "^2.3.1",
-    "grunt-google-cdn": "^0.4.3",
+    "grunt-contrib-jshint": "2.1.0",
+    "grunt-contrib-uglify": "4.0.1",
+    "grunt-contrib-watch": "1.1.0",
+    "grunt-filerev": "2.3.1",
+    "grunt-google-cdn": "0.4.3",
     "grunt-karma": "*",
-    "grunt-newer": "^1.1.0",
-    "grunt-ng-annotate": "^3.0.0",
-    "grunt-svgmin": "^6.0.0",
-    "grunt-usemin": "^3.0.0",
-    "grunt-wiredep": "^3.0.1",
-    "jit-grunt": "^0.9.1",
-    "jshint-stylish": "^2.2.1",
+    "grunt-newer": "1.3.0",
+    "grunt-ng-annotate": "3.0.0",
+    "grunt-svgmin": "6.0.0",
+    "grunt-usemin": "3.1.1",
+    "grunt-wiredep": "3.0.1",
+    "jit-grunt": "0.9.1",
+    "jshint-stylish": "2.2.1",
     "karma": "*",
     "karma-jasmine": "*",
     "karma-phantomjs-launcher": "*",
-    "time-grunt": "^2.0.0"
+    "time-grunt": "2.0.0"
   },
   "engines": {
     "node": ">=0.10.0"
@@ -43,6 +43,6 @@
     "serve": "npx grunt serve"
   },
   "dependencies": {
-    "serve-static": "^1.14.1"
+    "serve-static": "1.14.1"
   }
 }