ci: bump actions/setup-node from 4 to 6

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4 to 6.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v4...v6)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
 
       - uses: pnpm/action-setup@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: "pnpm"
@@ -41,7 +41,7 @@ jobs:
 
       - uses: pnpm/action-setup@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: "pnpm"
@@ -70,7 +70,7 @@ jobs:
 
       - uses: pnpm/action-setup@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: "pnpm"
@@ -89,7 +89,7 @@ jobs:
   #   steps:
   #     - uses: actions/checkout@v4
   #     - uses: pnpm/action-setup@v4
-  #     - uses: actions/setup-node@v4
+  #     - uses: actions/setup-node@v6
   #       with:
   #         node-version: 20
   #         cache: "pnpm"

.github/workflows/release.yml

@@ -24,7 +24,7 @@ jobs:
 
       - uses: pnpm/action-setup@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: "pnpm"
@@ -53,7 +53,7 @@ jobs:
 
       - uses: pnpm/action-setup@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: "pnpm"
@@ -84,7 +84,7 @@ jobs:
 
       - uses: pnpm/action-setup@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: "pnpm"
@@ -163,7 +163,7 @@ jobs:
 
       - uses: pnpm/action-setup@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v6
         with:
           node-version: 20
           cache: "pnpm"