Update all dependencies

Author: renovate[bot]

.github/workflows/check-renovatebot-config.yml

@@ -7,10 +7,10 @@ on:
 jobs:
   validate:
     name: Validate renovatebot config
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Validate
         uses: suzuki-shunsuke/github-action-renovate-config-validator@v0.1.3

.github/workflows/doctoc.yml

@@ -8,11 +8,11 @@ on:
 jobs:
   verify-doctoc:
     name: Verifies whether table of contents has been updated
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Run doctoc on README
         run: npx doctoc README.md

.github/workflows/test-extract-metadata-action.yml

@@ -8,7 +8,7 @@ on:
 jobs:
   test-extract-metadata:
     name: Retrieves metadata
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Check that environment is empty

.github/workflows/test-healthcheck-action.yml

@@ -8,11 +8,11 @@ on:
 jobs:
   test-healthcheck-success:
     name: Verifies whether healthcheck action succeeds when it should
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Startup sample HTTP server
         run: docker run -d -p 8080:80 nginxdemos/hello

.github/workflows/test-run-cypress-tests-action.yml

@@ -12,7 +12,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Start e2e env
         uses: ./github-actions/setup-e2e-environment

.github/workflows/test-setup-e2e-environment-action.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   test-e2e-setup-action:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
 
     strategy:
       matrix:
@@ -54,7 +54,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Retrieve branch name
         uses: HSLdevcom/jore4-tools/github-actions/extract-metadata@extract-metadata-v1