ci: Bump actions/download-artifact from 4 to 7

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4 to 7.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4...v7)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/koschei-production.yml

@@ -91,7 +91,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Download artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           name: trinity-binaries
 
@@ -127,7 +127,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Download artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           name: trinity-binaries
 

.github/workflows/release.yml

@@ -195,7 +195,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Download all artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           path: artifacts
 

.github/workflows/trinity-binary-release.yml

@@ -248,7 +248,7 @@ jobs:
     needs: [build-linux-amd64, build-linux-arm64, build-macos-amd64, build-macos-arm64, build-windows]
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           path: release
 
@@ -273,7 +273,7 @@ jobs:
       contents: write
     steps:
       - name: Download all artifacts
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v8
         with:
           path: release