Bump actions/setup-node from 2.pre.beta to 3.8.1

Bumps [actions/setup-node](https://github.com/actions/setup-node) from 2.pre.beta to 3.8.1.
- [Release notes](https://github.com/actions/setup-node/releases)
- [Commits](actions/setup-node@v2-beta...v3.8.1)

---
updated-dependencies:
- dependency-name: actions/setup-node
  dependency-type: direct:production
...

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

.github/workflows/build-0.4.x.x.yml

@@ -42,7 +42,7 @@ jobs:
       TPLINK_PASS: ${{ secrets.TPLINK_PASS }}
     steps:
       - name: Setup Node.js environment
-        uses: actions/setup-node@v2-beta
+        uses: actions/setup-node@v3.8.1
         with:
           node-version: 11.x
       - uses: actions/checkout@v2
@@ -154,7 +154,7 @@ jobs:
       TPLINK_PASS: ${{ secrets.TPLINK_PASS }}
     steps:
       - name: Setup Node.js environment
-        uses: actions/setup-node@v2-beta
+        uses: actions/setup-node@v3.8.1
         with:
           node-version: 11.x
       - uses: actions/checkout@v2

.github/workflows/build-dev.yml

@@ -47,7 +47,7 @@ jobs:
       TPLINK_PASS: ${{ secrets.TPLINK_PASS }}
     steps:
       - name: Setup Node.js environment
-        uses: actions/setup-node@v2-beta
+        uses: actions/setup-node@v3.8.1
         with:
           node-version: 11.x
       - uses: actions/checkout@v2
@@ -144,7 +144,7 @@ jobs:
       TPLINK_PASS: ${{ secrets.TPLINK_PASS }}
     steps:
       - name: Setup Node.js environment
-        uses: actions/setup-node@v2-beta
+        uses: actions/setup-node@v3.8.1
         with:
           node-version: 11.x
       - uses: actions/checkout@v2