fix(build): Use current version of GitHub actions to avoid warnings

The old action versions previously specified attempted to use Node.js
v12, which is no longer supported, and a warning is issued when
they run on v16 instead.  Update build.yml so that we use versions
of the actions that use a version of node.js that is still supported.

.github/workflows/build.yml

@@ -15,10 +15,10 @@ jobs:
       matrix:
         node-version: [18.x, 20.x, 22.x]
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: ${{ matrix.node-version }}
 
@@ -35,10 +35,10 @@ jobs:
     timeout-minutes: 5
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: 20
 
@@ -52,10 +52,10 @@ jobs:
     timeout-minutes: 5
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Setup node
-        uses: actions/setup-node@v3
+        uses: actions/setup-node@v4
         with:
           node-version: 20