Bump actions/download-artifact from 5 to 6

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 5 to 6.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v5...v6)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/build_and_release_gem.yml

@@ -104,7 +104,7 @@ jobs:
       - uses: actions/checkout@v5
 
       - name: extract layer zip from artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: solarwinds_apm-${{ env.SOLARWINDS_APM_VERSION }}.gem
           path: ./

.github/workflows/build_for_github_package.yml

@@ -61,7 +61,7 @@ jobs:
       - uses: actions/checkout@v5
 
       - name: extract layer zip from artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: solarwinds_apm-${{ env.SOLARWINDS_APM_VERSION }}.gem
           path: builds

.github/workflows/build_publish_lambda_layer.yml

@@ -92,7 +92,7 @@ jobs:
       - uses: actions/checkout@v5
 
       - name: extract layer zip from artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: ruby-layer-${{ matrix.arch }}.zip
           path: lambda
@@ -172,7 +172,7 @@ jobs:
           aws-region: ${{ matrix.aws_region }}
 
       - name: extract layer zip from artifacts
-        uses: actions/download-artifact@v5
+        uses: actions/download-artifact@v6
         with:
           name: ruby-layer-${{ matrix.arch }}.zip
           path: lambda