Update checkout and setup-java github actions to v4

Author: Philippus

.github/workflows/ci.yml

@@ -14,11 +14,11 @@ jobs:
         scala: [2.11.x, 2.12.x, 2.13.x, 3.x]
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
       with:
         fetch-depth: 0
     - uses: coursier/cache-action@v6
-    - uses: actions/setup-java@v2
+    - uses: actions/setup-java@v4
       with:
         distribution: temurin
         java-version: ${{matrix.java}}

.github/workflows/release.yml

@@ -6,10 +6,10 @@ jobs:
   publish:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: actions/setup-java@v2
+      - uses: actions/setup-java@v4
         with:
           distribution: temurin
           java-version: 8