Use JDk 17 for CI

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
             distribution: temurin
             jobtype: 1
           - os: ubuntu-latest
-            java: 8
+            java: 17
             distribution: zulu
             jobtype: 2
           - os: ubuntu-latest
@@ -41,15 +41,15 @@ jobs:
             distribution: zulu
             jobtype: 7
           - os: ubuntu-latest
-            java: 11
+            java: 17
             distribution: temurin
             jobtype: 10
           - os: ubuntu-latest
-            java: 11
+            java: 17
             distribution: temurin
             jobtype: 11
           - os: windows-latest
-            java: 11
+            java: 17
             distribution: temurin
             jobtype: 10
     runs-on: ${{ matrix.os }}

.github/workflows/client-test.yml

@@ -13,13 +13,13 @@ jobs:
       matrix:
         include:
           - os: ubuntu-latest
-            java: 8
+            java: 17
             distribution: zulu
           - os: macos-latest
             java: 17
             distribution: temurin
           - os: windows-latest
-            java: 8
+            java: 17
             distribution: zulu
     runs-on: ${{ matrix.os }}
     env:

.github/workflows/server-test.yml

@@ -19,7 +19,7 @@ jobs:
       uses: actions/setup-java@v5
       with:
         distribution: "zulu"
-        java-version: "8"
+        java-version: "17"
         cache: sbt
     - uses: sbt/setup-sbt@v1
     - name: Server test