Bump actions/download-artifact from 7.0.0 to 8.0.0 (#1249)

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 7.0.0 to 8.0.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@37930b1...70fc10c)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 8.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Akinola Olutola <akinola.olutola1@nhs.net>
Co-authored-by: Daniel Yip <daniel.yip4@nhs.net>

Author: 3 people

.github/workflows/deploy-backend.yml

@@ -113,7 +113,7 @@ jobs:
           terraform_version: "1.12.2"
 
       - name: Retrieve Terraform Plan
-        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131
+        uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3
         with:
           name: ${{ env.ENVIRONMENT }}-${{ env.SUB_ENVIRONMENT }}-tfplan
           path: infrastructure/instance

.github/workflows/run-e2e-automation-tests.yml

@@ -259,7 +259,7 @@ jobs:
       - uses: actions/checkout@0c366fd6a839edf440554fa01a7085ccba70ac98
 
       - name: Download e2e automation test artifact
-        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131
+        uses: actions/download-artifact@70fc10c6e5e1ce46ad2ea6f2b72d43f7d47b13c3
         with:
           name: ${{ env.ENVIRONMENT }}-${{ env.SUB_ENVIRONMENT }}-${{ env.APIGEE_ENVIRONMENT }}-e2e-test-output
           path: tests/e2e_automation/output