Java 8 to Java 17 so that build will work with new bndlib

Signed-off-by: Scott Lewis <scottslewis@gmail.com>

Author: scottslewis

.github/workflows/build.yml

@@ -21,7 +21,7 @@ jobs:
             uses: actions/setup-java@v2
             with: 
                 distribution: 'temurin'
-                java-version: 8
+                java-version: 17
         -   name: Build
             shell: bash
             run: ./gradlew build