Update actions and keep them updated

Author: skwashd

.github/dependabot.yml

@@ -6,5 +6,9 @@ updates:
       interval: daily
   - package-ecosystem: gomod
     directory: lambda
+    schedule:
+      interval: daily
+  - package-ecosystem: github-actions
+    directory: /
     schedule:
       interval: daily

.github/workflows/pr.yml

@@ -10,18 +10,18 @@ on:
 
 jobs:
   golang:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
       - name: Checkout
         id: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Go
         id: setup
-        uses: actions/setup-go@v4
+        uses: actions/setup-go@v6
         with:
-          go-version: '1.21.x'
+          go-version-file: 'lambda/go.mod'
 
       - name: Install dependencies
         id: deps
@@ -41,18 +41,16 @@ jobs:
         run: go test ./... -cover
 
   terraform:
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
 
     steps:
       - name: Checkout
         id: checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Setup Terraform
         id: setup
-        uses: hashicorp/setup-terraform@v1
-        with:
-          terraform_version: '1.5.7'
+        uses: hashicorp/setup-terraform@v3
 
       - name: Terraform Format
         id: format
@@ -83,9 +81,9 @@ jobs:
 
       - name: Setup TFLint
         id: tflint-setup
-        uses: terraform-linters/setup-tflint@19a52fbac37dacb22a09518e4ef6ee234f2d4987 # v4.0.0
+        uses: terraform-linters/setup-tflint@v6.2.1
         with:
-          tflint_version: v0.48.0
+          tflint_version: 'latest'
 
       - name: Init TFLint
         id: tflint-init