chore(ci): bump GitHub actions to the latest versions

Author: azasypkin

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
         ports:
           - 5432:5432
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Install Protoc
         uses: arduino/setup-protoc@v3
@@ -74,9 +74,9 @@ jobs:
     name: Build Web UI (Linux)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version-file: '.nvmrc'
           cache: 'npm'
@@ -91,9 +91,9 @@ jobs:
     name: Build Docs (Linux)
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version-file: '.nvmrc'
           cache: 'npm'