Update github actions

- remove Java 16 support
- move continue-on-error

.github/workflows/test-pr.yml

@@ -8,17 +8,17 @@ jobs:
   build:
     name: Checkout and Build
     runs-on: ubuntu-latest
-    continue-on-error: true
 
     strategy:
       fail-fast: false
       matrix:
-        java-version: [8, 11, 16, 17, 21]
+        java-version: [8, 11, 17, 21]
 
     steps:
       - uses: actions/checkout@v4
       - name: JDK setup
         uses: actions/setup-java@v4
+        continue-on-error: true
         with:
           java-version: ${{ matrix.java-version }}
           distribution: 'temurin'

.github/workflows/update-arlington-workflow.yml

@@ -9,12 +9,10 @@ jobs:
   checkout-and-build:
     runs-on: ubuntu-latest
 
-    continue-on-error: true
-
     strategy:
       fail-fast: false
       matrix:
-        java-version: [11, 16, 17, 21]
+        java-version: [11, 17, 21]
 
     steps:
       - name: Checkout code
@@ -24,6 +22,7 @@ jobs:
           ref: integration
       - name: JDK setup
         uses: actions/setup-java@v4
+        continue-on-error: true
         with:
           java-version: ${{ matrix.java-version }}
           distribution: 'temurin'

.github/workflows/update-jakarta-workflow.yml

@@ -9,12 +9,10 @@ jobs:
   checkout-and-build:
     runs-on: ubuntu-latest
 
-    continue-on-error: true
-
     strategy:
       fail-fast: false
       matrix:
-        java-version: [11, 16, 17, 21]
+        java-version: [11, 17, 21]
 
     steps:
       - name: Checkout code
@@ -24,6 +22,7 @@ jobs:
           ref: integration
       - name: JDK setup
         uses: actions/setup-java@v4
+        continue-on-error: true
         with:
           java-version: ${{ matrix.java-version }}
           distribution: 'temurin'

README.md

@@ -28,7 +28,7 @@ Quick Start
 
 In order to build this project you'll need:
 
- * Java 8 - 21, which can be downloaded [from Oracle](https://www.oracle.com/technetwork/java/javase/downloads/index.html), or for Linux users [OpenJDK](https://openjdk.java.net/install/index.html).
+ * Java 8, 11, 17 or 21, which can be downloaded [from Oracle](https://www.oracle.com/technetwork/java/javase/downloads/index.html), or for Linux users [OpenJDK](https://openjdk.java.net/install/index.html).
  * [Maven v3+](https://maven.apache.org/)
 
 ### Building the veraPDF Validation Model