GH-1 - Tweak CI build to avoid obsolete integration builds.

.github/workflows/build.yaml

@@ -2,7 +2,7 @@ name: Maven Build
 
 on:
   push:
-    branches: [ main, 1.3.x ]
+    branches: [ main ]
   pull_request:
     branches: [ main ]
 
@@ -25,25 +25,3 @@ jobs:
 
     - name: Build with Maven
       run: ./mvnw -B
-
-  integrations:
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        boot-version: ["2.5.14", "2.6.9", "3.0.0-SNAPSHOT"]
-    name: Integration test (Boot ${{ matrix.boot-version }})
-    needs: build
-    steps:
-
-    - name: Check out sources
-      uses: actions/checkout@v2
-
-    - name: Set up JDK 17
-      uses: actions/setup-java@v2
-      with:
-        distribution: 'temurin'
-        java-version: 17
-        cache: 'maven'
-
-    - name: Build with Maven (Boot ${{ matrix.boot-version }})
-      run: sed -i -e 's/2.7.1/${{ matrix.boot-version }}/g' ./pom.xml && ./mvnw dependency:list -B && ./mvnw -B