fix: steps tail style & upgrade deps.

ant-design/ant-design#5623

components/steps/style/index.less

@@ -184,10 +184,13 @@
     display: inline-block;
     padding-right: 10px;
   }
-  &-item-last {
+  &-item:last-child {
     .@{stepsPrefixCls}-title {
       padding-right: 0;
     }
+   .@{stepsPrefixCls}-tail {
+      display: none;
+    }
   }
   &-description {
     font-size: @font-size-subhead;

package.json

@@ -31,8 +31,8 @@
     "array-tree-filter": "~1.0.0",
     "babel-runtime": "6.x",
     "classnames": "~2.2.1",
-    "moment": "~2.17.1",
-    "normalize.css": "^5.0.0",
+    "moment": "~2.18.1",
+    "normalize.css": "^6.0.0",
     "nuka-carousel": "~2.0.4",
     "object-assign": "~4.1.0",
     "omit.js": "~0.1.0",
@@ -43,9 +43,9 @@
     "rc-input-number": "~3.4.4",
     "rc-notification": "~1.4.1",
     "rc-slider": "~7.0.0",
-    "rc-steps": "~2.4.1",
+    "rc-steps": "~2.5.0",
     "rc-swipeout": "~1.2.4",
-    "rc-table": "~5.2.2",
+    "rc-table": "~5.3.0",
     "rc-tabs": "~7.3.1",
     "rc-tooltip": "~3.4.2",
     "rc-touchable": "~1.0.11",
@@ -71,15 +71,15 @@
     "babel-eslint": "^7.1.0",
     "babel-jest": "^19.0.0",
     "babel-plugin-import": "^1.1.1",
-    "babel-plugin-transform-runtime": "~6.15.0",
+    "babel-plugin-transform-runtime": "^6.23.0",
     "babel-preset-react-native": "^1.9.1",
     "bisheng": "^0.22.0",
     "bisheng-plugin-antd": "^0.12.0",
     "bisheng-plugin-description": "^0.1.1",
     "bisheng-plugin-react": "^0.5.0",
     "bisheng-plugin-toc": "^0.4.0",
-    "concurrently": "~2.1.0",
-    "cross-env": "^3.1.4",
+    "concurrently": "^3.4.0",
+    "cross-env": "^4.0.0",
     "dora-plugin-upload": "^0.3.1",
     "enquire.js": "^2.1.1",
     "enzyme": "^2.7.1",
@@ -95,7 +95,7 @@
     "glob": "^7.1.1",
     "jest": "^19.0.2",
     "jsonml.js": "^0.1.0",
-    "lesshint": "^2.1.0",
+    "lesshint": "^3.1.1",
     "lint-staged": "^3.3.1",
     "lodash.debounce": "^4.0.6",
     "mockdate": "^2.0.1",
@@ -113,7 +113,7 @@
     "react-native-mock": "^0.3.1",
     "react-native-router-flux": "^3.30.3",
     "react-test-renderer": "^15.4.2",
-    "svg-sprite-loader": "^0.0.31",
+    "svg-sprite-loader": "^0.3.0",
     "typescript": "~2.1.6",
     "typescript-babel-jest": "^1.0.1"
   },