set version strategy to increase - dependabot (#48)

Author: bjohansebas

.github/dependabot.yml

@@ -7,11 +7,12 @@ updates:
 
   - package-ecosystem: npm
     directory: /
+    versioning-strategy: increase
     schedule:
       interval: monthly
       time: "23:00"
       timezone: Europe/London
     open-pull-requests-limit: 10
     ignore:
       - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
+        update-types: ["version-update:semver-major"]