Bump actions/setup-node from 4.4.0 to 6.4.0

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 4.4.0 to 6.4.0.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@49933ea...48b55a0)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-version: 6.4.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/integration-tests.yml

@@ -27,7 +27,7 @@ jobs:
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
       - name: Use Node.js 22.x
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e  # v6.4.0
         with:
           node-version: 22.x
 

.github/workflows/openfeature-provider-tests.yml

@@ -20,7 +20,7 @@ jobs:
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4.4.0
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
           node-version: ${{ matrix.node-version }}
       - name: Install OpenFeature Web Provider dependencies

.github/workflows/unit-tests.yml

@@ -21,7 +21,7 @@ jobs:
     steps:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020  # v4
+        uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e  # v6.4.0
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm ci