Update more dependencies to their latest versions (#45)

Author: sethvargo

.github/workflows/integration.yml

@@ -37,7 +37,7 @@ jobs:
 
     - id: 'set-up-node'
       name: 'Set up Node'
-      uses: 'actions/setup-node@v3'
+      uses: 'actions/setup-node@v4'
       with:
         node-version: '20.x'
 

.github/workflows/unit.yml

@@ -27,7 +27,7 @@ jobs:
     steps:
     - uses: 'actions/checkout@v4'
 
-    - uses: 'actions/setup-node@v3'
+    - uses: 'actions/setup-node@v4'
       with:
         node-version: '20.x'