Update GitHub Actions

This changeset updates all references to GitHub Actions to be version 4 due to a mandatory Node.js update.

Signed-off-by: Carlo Costino <carlo.costino@gsa.gov>

.github/workflows/drift.yml

@@ -13,7 +13,7 @@ jobs:
     environment: staging
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Check for drift
         uses: dflook/terraform-check@v1
@@ -31,7 +31,7 @@ jobs:
     environment: demo
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: 'production'
 
@@ -51,7 +51,7 @@ jobs:
     environment: production
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: 'production'