ci: remove node v5,7 and 9

Author: inigomarquinez

Diff for: .github/workflows/ci.yml

@@ -16,11 +16,8 @@ jobs:
         - io.js 2.x
         - io.js 3.x
         - Node.js 4.x
-        - Node.js 5.x
         - Node.js 6.x
-        - Node.js 7.x
         - Node.js 8.x
-        - Node.js 9.x
         - Node.js 10.x
         - Node.js 11.x
         - Node.js 12.x
@@ -60,26 +57,14 @@ jobs:
           node-version: "4.9"
           npm-i: [email protected] [email protected]
 
-        - name: Node.js 5.x
-          node-version: "5.12"
-          npm-i: [email protected] [email protected]
-
         - name: Node.js 6.x
           node-version: "6.17"
           npm-i: [email protected] [email protected]
 
-        - name: Node.js 7.x
-          node-version: "7.10"
-          npm-i: [email protected] [email protected]
-
         - name: Node.js 8.x
           node-version: "8.17"
           npm-i: [email protected] [email protected]
 
-        - name: Node.js 9.x
-          node-version: "9.11"
-          npm-i: [email protected] [email protected]
-
         - name: Node.js 10.x
           node-version: "10.24"
           npm-i: [email protected]