refactor: consolidate Dependabot dependency groups and remove placeholder pom.xml

- Consolidate Dependabot from 4 entries to 2 (single gradle entry + github-actions)
- Merge /android directory into main gradle entry using directories key
- Remove maven ecosystem entry (replaced by Gradle dependency submission)
- Add android-build-tools and all-actions dependency groups
- Add dependency-submission job to gradle-build workflow
- Delete placeholder pom.xml and remove references from build.gradle and release-please-config.json

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: ramsessanchez

.github/dependabot.yml

@@ -4,6 +4,7 @@ updates:
   directories:
     - "/"
     - "/java-8"
+    - "/android"
   schedule:
     interval: daily
     time: "09:00" # 9am UTC
@@ -18,39 +19,18 @@ updates:
     open-telemetry:
       patterns:
         - "*opentelemetry*"
-- package-ecosystem: gradle
-  directory: "/android"
-  schedule:
-    interval: daily
-    time: "10:00" # 10am UTC. After core dependencies are updated to prevent duplicates.
-  open-pull-requests-limit: 10
-  groups:
-    kiota-dependencies:
-      patterns:
-        - "*kiota*"
-    junit-dependencies:
+    android-build-tools:
       patterns:
-        - "*junit*"
-    open-telemetry:
-      patterns:
-        - "*opentelemetry*"
-- package-ecosystem: maven
+        - "*android*"
+        - "*gradle-enterprise*"
+        - "*gradle-util*"
+        - "*gradle-versions*"
+- package-ecosystem: github-actions
   directory: "/"
   schedule:
     interval: daily
   open-pull-requests-limit: 10
   groups:
-    kiota-dependencies:
-      patterns:
-        - "*kiota*"
-    junit-dependencies:
-      patterns:
-        - "*junit*"
-    open-telemetry:
+    all-actions:
       patterns:
-        - "*opentelemetry*"
-- package-ecosystem: github-actions
-  directory: "/"
-  schedule:
-    interval: daily
-  open-pull-requests-limit: 10
+        - "*"

.github/workflows/gradle-build.yml

@@ -1,6 +1,8 @@
 name: Java CI with Gradle
 
 on:
+  push:
+    branches: [main]
   pull_request:
     branches: [main, support/2.x.x]
   workflow_dispatch:
@@ -38,3 +40,19 @@ jobs:
             gradle.properties
             **/gradle/**
             Scripts/**
+
+  dependency-submission:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push'
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v6
+      - name: Set up JDK
+        uses: actions/setup-java@v5
+        with:
+          java-version: 21
+          distribution: 'temurin'
+          cache: gradle
+      - name: Generate and submit dependency graph
+        uses: gradle/actions/dependency-submission@v4

build.gradle

@@ -60,7 +60,6 @@ jacocoTestReport {
 sourceSets {
     main {
         java {
-            exclude 'pom.xml'
         }
     }
 }

pom.xml

@@ -16,12 +16,7 @@
           "extra-files": [
               "gradle.properties",
               "README.md",
-              "src/main/java/com/microsoft/graph/core/CoreConstants.java",
-              {
-                  "type": "xml",
-                  "path": "pom.xml",
-                  "xpath": "//project/version"
-              }
+              "src/main/java/com/microsoft/graph/core/CoreConstants.java"
           ]
       }
   },