Update dependabot.yml

+ Check for updates on a day when there is likely more time for them to be dealt with
+ Only apply version changes if they are not already covered by the configured qualifiers

.github/dependabot.yml

@@ -1,10 +1,18 @@
 version: 2
 updates:
   - package-ecosystem: "github-actions"
+    versioning-strategy: increase-if-necessary
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "saturday"
+      time: "03:00"
+      timezone: "America/New_York"
   - package-ecosystem: "npm"
+    versioning-strategy: increase-if-necessary
     directory: "/"
     schedule:
       interval: "weekly"
+      day: "saturday"
+      time: "03:00"
+      timezone: "America/New_York"