Switch to JDK 25 in CI build

Author: plokhotnyuk

.github/workflows/build.yml

@@ -21,7 +21,7 @@ jobs:
       matrix:
         java:
           - 17
-          - 21
+          - 25
         os:
           - ubuntu-22.04-arm
           - ubuntu-22.04
@@ -36,12 +36,17 @@ jobs:
           fetch-depth: 300
       - name: Fetch tags
         run: git fetch --depth=300 origin +refs/tags/*:refs/tags/*
+      - name: Set JVM options for JDK 25+
+        if: matrix.java >= 25
+        run: echo "JAVA_TOOL_OPTIONS=-XX:+UseCompactObjectHeaders" >> $GITHUB_ENV
+        shell: bash    
       - name: Cache SBT deps
         uses: coursier/cache-action@v6
       - name: Setup Scala with SBT
-        uses: coursier/setup-action@v1
+        uses: coursier/setup-action@v1.3.9
         with:
           jvm: temurin:${{ matrix.java }}
+          jvm-index: https://raw.githubusercontent.com/coursier/jvm-index/refs/heads/master/index.json
           apps: sbt
       - name: Setup Node.js
         uses: actions/setup-node@v4