actions: More GitHub actions (#1678)

* actions: Rename stale action

* actions: Use master branch of the action repos

* actions: Use OpenOSRS as name

* gradle: filter dependency updates

* gradle: Add use-latest-versions plugin

* actions: Update dependencies

* actions: Combine actions

* actions: Lint PR title

* actions: gradle console plain

* actions: Build and test with java matrix

* actions: Rane some actions

.github/workflows/build.yml

@@ -1,19 +1,78 @@
-name: RunelitePlus - CI
+name: OpenOSRS - CI
 
 on: [pull_request, push]
 
 jobs:
-  build:
+  pr-lint:
+    name: Title linter
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: PR title lint
+        if: github.event_name == 'pull_request'
+        uses: seferov/pr-lint-action@master
+        with:
+          title-regex: '^\w+: \w+'
 
+  build:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        java: [ 9, 11, 12 ]
+    name: Build (Java ${{ matrix.java }})
+
+    steps:
+      - uses: actions/checkout@master
+      - name: Set up JDK ${{ matrix.java }}
+        uses: actions/setup-java@master
+        with:
+          java-version: ${{ matrix.java }}
+      - name: Assembling
+        run: gradlew assemble --console=plain
+      - name: Building
+        run: gradlew build --stacktrace -x test -x checkstyleMain --console=plain
+
+  test:
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        java: [ 9, 11, 12 ]
+    name: Test (Java ${{ matrix.java }})
+
+    steps:
+      - uses: actions/checkout@master
+      - name: Set up JDK 11
+        uses: actions/setup-java@master
+        with:
+          java-version: ${{ matrix.java }}
+      - name: Assembling
+        run: gradlew assemble --console=plain
+      - name: Testing
+        run: gradlew test --stacktrace --console=plain
+
+  checkstyle:
+    name: Checkstyle
     runs-on: windows-latest
 
     steps:
-      - uses: actions/checkout@v1
+      - uses: actions/checkout@master
       - name: Set up JDK 11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@master
         with:
           java-version: 11
       - name: Assembling
         run: gradlew assemble --console=plain
-      - name: Building
-        run: gradlew build --stacktrace -x test -x checkstyleMain --console=plain
+      - name: Checking code conventions
+        run: gradlew checkstyleMain --console=plain
+
+  approve:
+    name: Approve
+    needs: [build, test, checkstyle]
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Approve pull request
+        if: github.event_name == 'pull_request' && github.actor == 'OpenOSRS'
+        uses: hmarr/auto-approve-action@master
+        with:
+          github-token: "${{ secrets.GITHUB_TOKEN }}"