chore: bump CI actions onto the Node 24 runtime (#33)

The previously pinned action majors run on the Node 20 action runtime, which has reached end-of-life. Bump to current majors that run on Node 24.

GitHub progressively deprecates EOL action runtimes (as it did with Node 16, which began annotating every run with warnings).

Author: amrtgaber

.github/workflows/ci.yml

@@ -11,15 +11,15 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@v6
         with:
           version: 10
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "24"
           cache: "pnpm"
@@ -46,15 +46,15 @@ jobs:
     if: ${{ vars.OPENAPI_URL != '' }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@v6
         with:
           version: 10
 
       - name: Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@v6
         with:
           node-version: "24"
           cache: "pnpm"