upgrade gradle to 8.8, add depbot config and wrapper update workflow (#16)

Author: countableSet

.github/dependabot.yaml

@@ -0,0 +1,15 @@
+---
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: weekly
+    ignore:
+      # private repo has trouble with access, plus we're using main anyways
+      - dependency-name: github/data-pipelines
+    reviewers:
+      - github/data-pipelines
+    groups:
+      actions:
+        patterns: ['*']

.github/workflows/gradle-upgrade.yaml

@@ -0,0 +1,19 @@
+name: Upgrade Gradle Wrapper
+
+on:
+  workflow_dispatch:
+  schedule:
+    # monday at midnight
+    - cron: '0 0 * * 1'
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  upgrade-wrapper:
+    uses: github/data-pipelines/.github/workflows/gradle-upgrade.yaml@main
+    secrets: inherit
+    with:
+      java-version: 17
+      base-branch: master

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.7-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.8-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME