Bump actions/upload-artifact from 5 to 6

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

---
updated-dependencies:
- dependency-name: actions/upload-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/docker.yaml

@@ -58,7 +58,7 @@ jobs:
           touch "/tmp/digests/${digest#sha256:}"
 
       - name: Upload digest
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: node-digests-${{ env.PLATFORM_PAIR }}
           path: /tmp/digests/*
@@ -125,7 +125,7 @@ jobs:
           touch "/tmp/digests/${digest#sha256:}"
 
       - name: Upload digest
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: frontend-digests-${{ env.PLATFORM_PAIR }}
           path: /tmp/digests/*

.github/workflows/docs.yaml

@@ -80,7 +80,7 @@ jobs:
         run: make docs-build
 
       - name: Upload build artifacts for testing
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: docs-build-test
           path: website/build
@@ -207,7 +207,7 @@ jobs:
           zip -r "mina-docs-${{ steps.version.outputs.version }}.zip" website/build
 
       - name: Upload versioned documentation as release asset
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: versioned-docs-${{ steps.version.outputs.version }}
           path: |

.github/workflows/tests.yaml

@@ -222,7 +222,7 @@ jobs:
         run: ./.github/scripts/test-misc-mina-key-pair.sh
 
       - name: Upload binaries
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: bin-${{ github.sha }}
           path: target/release/mina
@@ -362,7 +362,7 @@ jobs:
         run: make build-tests
 
       - name: Upload tests
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: tests-${{ github.sha }}
           path: target/release/tests
@@ -391,7 +391,7 @@ jobs:
         run: make build-tests-webrtc
 
       - name: Upload tests
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: tests-webrtc-${{ github.sha }}
           path: target/release/tests
@@ -633,15 +633,15 @@ jobs:
           }
 
       - name: Upload logs
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: bootstrap-logs-${{ github.sha }}
           path: ${{ env.MINA_HOME }}/logs/*
           retention-days: 7
         if: ${{ failure() }}
 
       - name: Upload record
-        uses: actions/upload-artifact@v5
+        uses: actions/upload-artifact@v6
         with:
           name: bootstrap-record-${{ github.sha }}
           path: ${{ env.MINA_HOME }}/recorder/*