Update and improve actions

.github/dependabot.yml

@@ -0,0 +1,17 @@
+# For more information, read https://docs.github.com/en/code-security/dependabot/dependabot-version-updates/about-dependabot-version-updates
+
+version: 2
+updates:
+  # Enable version updates for Maven
+  # Since the bot relies on it, check daily for updates
+  - package-ecosystem: "maven"
+    directory: "/"
+    schedule:
+      interval: "daily"
+
+  # Enable version updates for Actions
+  # Since Actions is secondary, only check for updates weekly
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/maven.yml

@@ -1,30 +1,25 @@
 name: Java CI
-
-on: [push]
-
+on: [push, pull_request]
 jobs:
   build:
     runs-on: ubuntu-latest
-    if: "!contains(github.event.commits[0].message, '[ci-skip]')"
-
+    # Only run on PRs if the source branch is on someone else's repo
+    if: ${{ github.event_name != 'pull_request' || github.repository != github.event.pull_request.head.repo.full_name }}   
     strategy:
       matrix:
         java: [16]
       fail-fast: true
-
     steps:
-      - uses: actions/checkout@v2
-
+      - uses: actions/checkout@v3
       - name: Set up JDK ${{ matrix.java }}
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v3
         with:
           java-version: ${{ matrix.java }}
-          distribution: 'adopt'
-
+          distribution: 'temurin'
       - name: Build with Maven
         run: mvn clean package
-
-      - uses: actions/upload-artifact@master
+      - uses: actions/upload-artifact@v3
+        if: ${{ github.event_name != 'pull_request' }}
         with:
           name: RC24-Bot
           path: target/RC24-Bot.jar