chore(deps): update github artifact actions

Author: renovate[bot]

.github/workflows/ci.yml

@@ -56,7 +56,7 @@ jobs:
         run: |
           octocov badge coverage --out ${{ github.workspace }}/${{ steps.filename.outputs.filename }}.svg
       - name: upload badge to artifact
-        uses: actions/upload-artifact@330a01c490aca151604b8cf639adc76d48f6c5d4 # v5.0.0
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           path: ${{ steps.filename.outputs.filename }}.svg
           name: ${{ steps.filename.outputs.filename }}
@@ -68,7 +68,7 @@ jobs:
     needs: themis
     steps:
       - name: download artifacts
-        uses: actions/download-artifact@018cc2cf5baa6db3ef3c5f8a56943fffe632ef53 # v6.0.0
+        uses: actions/download-artifact@37930b1c2abaa49bbe596cd826c3c89aef350131 # v7.0.0
         with:
           pattern: "badge-*"
       - name: move them into docs