Bump actions/setup-node from 4 to 7

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4 to 7.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v4...v7)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/frontend.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: "22"
           cache: npm

.github/workflows/infra.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: "22"
           cache: npm
@@ -33,7 +33,7 @@ jobs:
       # a real dist/ here too, not a stub. Mirrors frontend.yml's own
       # build steps (including the amplify_outputs.json placeholder — see
       # its comment there) rather than duplicating a different recipe.
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: "22"
           cache: npm

.github/workflows/node-services.yml

@@ -30,7 +30,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
-      - uses: actions/setup-node@v4
+      - uses: actions/setup-node@v7
         with:
           node-version: "22"
           cache: npm