Fix workflows to use Adoptium JDK 17

Author: robotgryphon

.github/workflows/ci-tests-nightly.yml

@@ -43,10 +43,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set up JDK 8
-        uses: actions/setup-java@v1
+      - name: Set up JDK
+        uses: actions/setup-java@v2
         with:
-          java-version: "8.0.282"
+          distribution: 'temurin'
+          java-version: "17"
 
       - name: Cache Gradle packages
         uses: actions/cache@v2
@@ -74,10 +75,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set up JDK 8
-        uses: actions/setup-java@v1
+      - name: Set up JDK
+        uses: actions/setup-java@v2
         with:
-          java-version: "8.0.282"
+          distribution: 'temurin'
+          java-version: "17"
 
       - name: Cache Gradle packages
         uses: actions/cache@v2

.github/workflows/manual-gh-packages.yml

@@ -108,10 +108,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set up JDK 1.8
-        uses: actions/setup-java@v1
+      - name: Set up JDK
+        uses: actions/setup-java@v2
         with:
-          java-version: "8.0.282"
+          distribution: 'temurin'
+          java-version: "17"
 
       - name: Cache Gradle packages
         uses: actions/cache@v2

.github/workflows/tagged-release.yml

@@ -114,10 +114,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set up JDK 1.8
-        uses: actions/setup-java@v1
+      - name: Set up JDK
+        uses: actions/setup-java@v2
         with:
-          java-version: "8.0.282"
+          distribution: 'temurin'
+          java-version: "17"
 
       - name: Cache Gradle packages
         uses: actions/cache@v2
@@ -220,10 +221,11 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2
 
-      - name: Set up JDK 1.8
-        uses: actions/setup-java@v1
+      - name: Set up JDK
+        uses: actions/setup-java@v2
         with:
-          java-version: "8.0.282"
+          distribution: 'temurin'
+          java-version: "17"
 
       - name: Cache Gradle packages
         uses: actions/cache@v2

.github/workflows/test-build.yml

@@ -108,9 +108,10 @@ jobs:
         uses: actions/checkout@v2
 
       - name: Set up JDK
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v2
         with:
-          java-version: "8.0.282"
+          distribution: 'temurin'
+          java-version: "17"
 
       - name: Cache Gradle packages
         uses: actions/cache@v2