Merge pull request #560 from Flowdalic/ubuntu-22.04

[github ci]: Bump to Ubuntu 22.04

.github/workflows/ci.yml

@@ -9,18 +9,20 @@ jobs:
   build:
     name: Build Smack
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     strategy:
       matrix:
-        java: [ 1.8, 11 ]
+        java: [ 11 ]
 
     steps:
       - name: Checkout
-        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: temurin
 
       # Caches
       - name: Cache Maven