Update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/build.yml

@@ -8,7 +8,7 @@ jobs:
     build:
         runs-on: ubuntu-latest
         steps:
-            -   uses: actions/checkout@v6
+            -   uses: actions/checkout@v7
             -   uses: actions/setup-java@v5
                 with:
                     distribution: 'zulu'

.github/workflows/release.yml

@@ -7,7 +7,7 @@ jobs:
     build:
         runs-on: ubuntu-latest
         steps:
-            -   uses: actions/checkout@v6
+            -   uses: actions/checkout@v7
             -   uses: actions/setup-java@v5
                 with:
                     distribution: 'zulu'