Resolve Technical Debt- Upgrade from JDK-8 to JDK21 and Spring Boot from 2.3.12.RELEASE to 3.3.2

.github/workflows/manual.yml

@@ -34,10 +34,10 @@ jobs: # This workflow contains a single job called "greet"
     steps: # Runs a single command using the runners shell
       - name: Checkout Code
         uses: actions/checkout@v3
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v3
         with:
-          java-version: '11'
+          java-version: '21'
           distribution: 'adopt'
           cache: 'maven'
       - name: Setup Golang

.github/workflows/maven.yml

@@ -14,10 +14,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - name: Set up JDK 11
+    - name: Set up JDK 21
       uses: actions/setup-java@v4
       with:
-        java-version: '11'
+        java-version: '21'
         distribution: 'adopt'
         cache: 'maven'
     - name: Set up properties

java/.gitignore

@@ -24,4 +24,5 @@ hs_err_pid*
 target
 mvn*
 .mvn*
-deps/keycloak/providers/keycloak-mobile-number-login-spi-1.0-SNAPSHOT.jar
+deps/keycloak/providers/keycloak-mobile-number-login-spi-1.0-SNAPSHOT.jar
+.lh