Bump actions/download-artifact from 4.1.2 to 6.0.0

Bumps [actions/download-artifact](https://github.com/actions/download-artifact) from 4.1.2 to 6.0.0.
- [Release notes](https://github.com/actions/download-artifact/releases)
- [Commits](actions/download-artifact@v4.1.2...018cc2c)

---
updated-dependencies:
- dependency-name: actions/download-artifact
  dependency-version: 6.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -159,7 +159,7 @@ jobs:
           go-version-file: 'go.mod'
           cache: false
       - name: Download Packages
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           name: nginx-agent-unsigned-snapshots
           path: build
@@ -209,7 +209,7 @@ jobs:
           go-version-file: 'go.mod'
           cache: false
       - name: Download Packages
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           name: nginx-agent-unsigned-snapshots
           path: build
@@ -266,7 +266,7 @@ jobs:
           go-version-file: 'go.mod'
           cache: false
       - name: Download Packages
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           name: nginx-agent-unsigned-snapshots
           path: build
@@ -333,7 +333,7 @@ jobs:
           go-version-file: 'go.mod'
           cache: false
       - name: Download Packages
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           name: nginx-agent-unsigned-snapshots
           path: build
@@ -399,7 +399,7 @@ jobs:
           go-version-file: 'go.mod'
           cache: false
       - name: Download Packages
-        uses: actions/download-artifact@eaceaf801fd36c7dee90939fad912460b18a1ffe # v4.1.2
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           name: nginx-agent-unsigned-snapshots
           path: build
@@ -466,7 +466,7 @@ jobs:
           go-version-file: 'go.mod'
           cache: false
       - name: Download Packages
-        uses: actions/download-artifact@eaceaf801fd36c7dee90939fad912460b18a1ffe # v4.1.2
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           name: nginx-agent-unsigned-snapshots
           path: build
@@ -550,7 +550,7 @@ jobs:
           cache: false
 
       - name: Download Packages
-        uses: actions/download-artifact@634f93cb2916e3fdff6788551b99b062d0335ce0 # v5.0.0
+        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
         with:
           name: nginx-agent-unsigned-snapshots
           path: build