chore(deps): update redis docker digest to d318520 (#2840)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| redis | service | digest | `1c589f3` -> `d318520` |

---

### Configuration

📅 **Schedule**: Branch creation - "on the 2nd through 5th day of the
month" (UTC), Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR is behind base branch, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/JabRef/JabRefOnline).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0MS4xNTkuNCIsInVwZGF0ZWRJblZlciI6IjQxLjE1OS40IiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6W119-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -67,7 +67,7 @@ jobs:
           - 5432:5432
 
       redis:
-        image: redis@sha256:1c589f39ec5bb0c553d680b6d7eed3b6e3686b24f87f480dabdd1e64c849aba2
+        image: redis@sha256:d318520052025d3cc5850ba3de966810916c7a7b327b412322399f38be39a39c
         # Set health checks to wait until redis has started
         options: >-
           --health-cmd "redis-cli ping"

.github/workflows/copilot-setup-steps.yml

@@ -33,7 +33,7 @@ jobs:
           - 5432:5432
 
       redis:
-        image: redis@sha256:1c589f39ec5bb0c553d680b6d7eed3b6e3686b24f87f480dabdd1e64c849aba2
+        image: redis@sha256:d318520052025d3cc5850ba3de966810916c7a7b327b412322399f38be39a39c
         # Set health checks to wait until redis has started
         options: >-
           --health-cmd "redis-cli ping"