chore(ci): update ci to newest checkout java and simplify caching

Author: ckipp01

.github/workflows/language-reference.yaml

@@ -30,22 +30,14 @@ jobs:
           fetch-depth: 0
           ssh-key: ${{ secrets.DOCS_KEY }}
 
-      - name: Cache Coursier
-        uses: actions/cache@v1
-        with:
-          path: ~/.cache/coursier
-          key: sbt-coursier-cache
-
-      - name: Cache SBT
-        uses: actions/cache@v1
-        with:
-          path: ~/.sbt
-          key: sbt-${{ hashFiles('**/build.sbt') }}
+      - name: Cache coursier and sbt
+      - uses: coursier/cache-action@v6
 
-      - name: Set up JDK 11
-        uses: actions/setup-java@v1
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
         with:
-          java-version: 11
+          distribution: 'temurin'
+          java-version: 17
 
       - name: Generate reference documentation and test links
         run: |

.github/workflows/scaladoc.yaml

@@ -26,21 +26,14 @@ jobs:
       - name: Git Checkout
         uses: actions/checkout@v3
 
-      - name: Cache Coursier
-        uses: actions/cache@v1
-        with:
-          path: ~/.cache/coursier
-          key: sbt-coursier-cache
-      - name: Cache SBT
-        uses: actions/cache@v1
-        with:
-          path: ~/.sbt
-          key: sbt-${{ hashFiles('**/build.sbt') }}
+      - name: Cache coursier and sbt
+      - uses: coursier/cache-action@v6
 
-      - name: Set up JDK 11
-        uses: actions/setup-java@v1
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
         with:
-          java-version: 11
+          distribution: 'temurin'
+          java-version: 17
 
       - name: Compile and test scala3doc-js
         run: ./project/scripts/sbt scaladoc-js-main/test
@@ -98,10 +91,11 @@ jobs:
       - name: Git Checkout
         uses: actions/checkout@v3
 
-      - name: Set up JDK 8
-        uses: actions/setup-java@v1
+      - name: Set up JDK 17
+        uses: actions/setup-java@v3
         with:
-          java-version: 8
+          distribution: 'temurin'
+          java-version: 17
 
       - name: Test sourcelinks to stdlib
         run: true # ./project/scripts/sbt scaladoc/sourceLinksIntegrationTest:test