chore(deps): update actions/checkout action to v4 #5

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Fascinated wants to merge 1 commits from renovate/actions-checkout-4.x into master

@ -18,7 +18,7 @@ jobs:
runs-on: ${{ matrix.os }}
steps:
- name: checkout repository
uses: actions/checkout@v3
uses: actions/checkout@v4
#- name: validate gradle wrapper
# uses: gradle/wrapper-validation-action@v1
- name: setup jdk ${{ matrix.java }}