feat(pihole): ***BREAKING CHANGES*** update envs for v6 (#32304)

**Description**
Update envs for v6, remove configmap, fix probes and switch image to
ghcr.

⚒️ Fixes  # 

**⚙️ Type of change**

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

**🧪 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 changes to the documentation
- [ ] 🧪 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):`, `chore(chart-name):`, `docs(chart-name):` or
`fix(docs):`

**➕ 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`

---

_Please don't blindly check all the boxes. Read them and only check
those that apply.
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charts/stable/pihole/Chart.yaml

@@ -6,7 +6,7 @@ annotations:
   truecharts.org/min_helm_version: "3.11"
   truecharts.org/train: stable
 apiVersion: v2
-appVersion: 2024.07.0
+appVersion: 2025.02.2
 dependencies:
   - name: common
     version: 25.4.10
@@ -34,4 +34,4 @@ sources:
   - https://hub.docker.com/r/pihole/pihole
   - https://pi-hole.net/
 type: application
-version: 18.7.1
+version: 19.0.0

charts/stable/pihole/templates/_configmap.tpl

@@ -1,14 +0,0 @@
-{{/* Define the configmap */}}
-{{- define "pihole.configmap" -}}
-configmap:
-  pihole-env:
-    enabled: true
-    data:
-      WEBPASSWORD: {{ .Values.pihole.webPassword | quote }}
-      {{- with .Values.pihole.dnsServers }}
-        {{- if gt (len .) 2 -}}
-          {{- fail (printf "Pihole - Expected max 2 DNS Servers. But got [%v]" (len .)) -}}
-        {{- end }}
-      PIHOLE_DNS_: {{ join ";" . | quote }}
-      {{- end }}
-{{- end -}}

charts/stable/pihole/templates/common.yaml

@@ -1,11 +1,2 @@
-{{/* Make sure all variables are set properly */}}
-{{- include "tc.v1.common.loader.init" . }}
-
-{{/* Render configmap for pihole */}}
-{{- $config := include "pihole.configmap" . | fromYaml -}}
-{{- if $config -}}
-  {{- $_ := mustMergeOverwrite .Values $config -}}
-{{- end -}}
-
 {{/* Render the templates */}}
-{{ include "tc.v1.common.loader.apply" . }}
+{{ include "tc.v1.common.loader.all" . }}

charts/stable/pihole/values.yaml

@@ -1,12 +1,7 @@
 image:
-  repository: docker.io/pihole/pihole
+  repository: ghcr.io/pi-hole/pihole
   pullPolicy: IfNotPresent
-  tag: 2024.07.0@sha256:0def896a596e8d45780b6359dbf82fc8c75ef05b97e095452e67a0a4ccc95377
-pihole:
-  webPassword: somepassword"
-  dnsServers:
-    - "9.9.9.9"
-    - "149.112.112.112"
+  tag: 2025.02.2@sha256:8db61ff8b7647a2af225990d14f9209ccf47828f19eb989d59cafb98bb8d8605
 securityContext:
   container:
     readOnlyRootFilesystem: false
@@ -28,19 +23,18 @@ workload:
           env:
             PIHOLE_UID: "{{ .Values.securityContext.container.PUID }}"
             PIHOLE_GID: "{{ .Values.securityContext.pod.fsGroup }}"
-          envFrom:
-            - configMapRef:
-                name: pihole-env
+            FTLCONF_dns_upstreams: "8.8.8.8;8.8.4.4"
+            FTLCONF_webserver_api_password: "somepassword"
           probes:
             liveness:
               type: http
-              path: /admin/index.php
+              path: /admin
             readiness:
               type: http
-              path: /admin/index.php
+              path: /admin
             startup:
               type: http
-              path: /admin/index.php
+              path: /admin
 service:
   main:
     ports: