Move from up/download artifact v3 -> v4

See https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/ and https://github.com/aws/aws-xray-sdk-python/actions/runs/17223079110 for context

Author: thpierce

.github/workflows/IntegrationTesting.yaml

@@ -26,7 +26,7 @@ jobs:
  run: python setup.py sdist
 
  - name: Upload SDK build artifact
- uses: actions/upload-artifact@v3
+ uses: actions/upload-artifact@v4
  with:
  name: sdk-build-artifact
  path: .
@@ -45,7 +45,7 @@ jobs:
  python-version: '3.8'
 
  - name: Download X-Ray SDK build artifact
- uses: actions/download-artifact@v3
+ uses: actions/download-artifact@v4
  with:
  name: sdk-build-artifact
  path: ./sample-apps/flask
@@ -59,7 +59,7 @@ jobs:
  working-directory: ./sample-apps/flask
 
  - name: Upload WebApp with X-Ray SDK build artifact
- uses: actions/upload-artifact@v3
+ uses: actions/upload-artifact@v4
  with:
  name: sdk-flask-build-artifact
  path: ./sample-apps/flask/deploy.zip
@@ -74,7 +74,7 @@ jobs:
  uses: actions/checkout@v3
 
  - name: Download WebApp with X-Ray SDK build artifact
- uses: actions/download-artifact@v3
+ uses: actions/download-artifact@v4
  with:
  name: sdk-flask-build-artifact
 
@@ -112,7 +112,7 @@ jobs:
  working-directory: ./terraform
 
  - name: Upload terraform state files for destorying resources
- uses: actions/upload-artifact@v3
+ uses: actions/upload-artifact@v4
  with:
  name: terraform-state-artifact
  path: ./terraform
@@ -151,7 +151,7 @@ jobs:
 
  steps:
  - name: Download terraform state artifact
- uses: actions/download-artifact@v3
+ uses: actions/download-artifact@v4
  with:
  name: terraform-state-artifact