chore(deps): update actions/checkout action to v4 (#260)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yml

@@ -26,7 +26,7 @@ jobs:
       cancel-in-progress: true
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK ${{ matrix.java }}
         uses: actions/setup-java@v3
         with:
@@ -84,7 +84,7 @@ jobs:
     if: github.ref == 'refs/heads/master'
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up JDK 11
         uses: actions/setup-java@v3
         with:

.github/workflows/release.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       #Note: must use < JDK 16 to avoid Stream.toList() overriding StreamsKT.toList() (KT-47039)
       #Todo: might be fixed by 3a16a8c4e99d22845ca8529923e0a01ef8f7ec17