Merge pull request #414 from maxmind/claude/dependabot-gitsubmodule

STF-1287: Enable Dependabot for the tests/data submodule (STF-1290)

Author: oschwald

.github/dependabot.yml

@@ -21,3 +21,16 @@ updates:
           - github/codeql-action*
     cooldown:
       default-days: 7
+  - package-ecosystem: gitsubmodule
+    directory: /
+    schedule:
+      interval: weekly
+      day: monday
+      time: '14:00'
+    cooldown:
+      default-days: 7
+    ignore:
+      # libmaxminddb is pinned to release tags and compiled into our wheels.
+      # Dependabot moves submodules to the latest commit on the tracked branch
+      # when no newer tag exists, which would take us off release tags.
+      - dependency-name: extension/libmaxminddb