fix(immich): homepage widget (#27785)

**Description**
Fixes homepage widget to work with API breaking changes as outlined in
gethomepage/homepage#4110

⚒️ Fixes  # 

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [X] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code

**🧪 How Has This Been Tested?**

**📃 Notes:**

**✔️ Checklist:**

- [ ] ⚖️ My code follows the style guidelines of this project
- [ ] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [ ] 📄 I have made corresponding changes to the documentation
- [ ] ⚠️ My changes generate no new warnings
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [X] ⬆️ I increased versions for any altered app according to semantic
versioning
- [X] I made sure the title starts with `feat(chart-name):`,
`fix(chart-name):` or `chore(chart-name):`

**➕ App addition**

If this PR is an app addition please make sure you have done the
following.

- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

---

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Author: kqmaverick

charts/stable/immich/Chart.yaml

@@ -40,4 +40,4 @@ sources:
   - https://github.com/immich-app/immich
   - https://github.com/truecharts/charts/tree/master/charts/stable/immich
 type: application
-version: 17.15.1
+version: 17.15.2

charts/stable/immich/values.yaml

@@ -148,3 +148,10 @@ redis:
 portal:
   open:
     enabled: true
+
+ingress:
+  main:
+    integrations:
+      homepage:
+        widget:
+          version: 2