Update Helm chart with BMCUser CRD changes

Include updated BMCUser CRD in Helm chart with:
- List type markers for conditions array
- Updated validation for 1 week TTL maximum

Signed-off-by: Stefan Hipfel <stefan.hipfel@sap.com>

Author: stefanhipfel

dist/chart/templates/crd/metal.ironcore.dev_bmcusers.yaml

@@ -108,7 +108,7 @@ spec:
                 description: |-
                   ExpiresAt specifies an absolute timestamp when this user should be deleted.
                   This is useful for users that need to expire at a specific time.
-                  If not set along with TTL, the user is permanent.
+                  If neither ExpiresAt nor TTL is set, the user is permanent (no automatic deletion).
                   Mutually exclusive with TTL - only one should be set.
                 format: date-time
                 type: string
@@ -200,6 +200,9 @@ spec:
                   - type
                   type: object
                 type: array
+                x-kubernetes-list-map-keys:
+                - type
+                x-kubernetes-list-type: map
               effectiveBMCSecretRef:
                 description: |-
                   EffectiveBMCSecretRef references the BMCSecret currently used for this user.