Bump to Java 17

Author: adpi2

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
           submodules: true
       - uses: coursier/setup-action@v1
         with:
-          jvm: "adopt:1.8"
+          jvm: "adoptium:1.17"
       - uses: coursier/cache-action@v6
       - name: Unit tests
         run: sbt test
@@ -40,7 +40,7 @@ jobs:
           submodules: true
       - uses: coursier/setup-action@v1
         with:
-          jvm: "adopt:1.8"
+          jvm: "adoptium:1.17"
       - name: Integration tests
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

CONTRIBUTING.md

@@ -25,7 +25,7 @@ For development you only need to clone [scaladex]:
 You will need the following tools installed:
 
 * git
-* Java 1.8
+* Java 1.17
 * the [sbt](https://www.scala-sbt.org/) build tool
 * a Scala code editor:
   * [VSCode](https://code.visualstudio.com/) with [Metals](https://scalameta.org/metals/)