chore(deps): update actions/checkout action to v6 (#203)

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

Author: renovate[bot]

.github/workflows/.schema-spy.yml

@@ -49,7 +49,7 @@ jobs:
           - 5432:5432
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Flyway
         uses: docker://flyway/flyway:11@sha256:1e53436ada80ff9ff907ad58dedffdf45e786b88b8faf376f3b7291166d1d87c

.github/workflows/csr-generator.yml

@@ -55,7 +55,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Make script executable
         run: chmod +x ./cert-setup/csr_generator.sh