[bitnami/phpmyadmin] phpmyadmin fix default probes

[dani8art]

Description of the change

When successThreshold or failureThreshold are not set, the probes don't work.

NAME                          READY   STATUS    RESTARTS   AGE
phpmyadmin-6dc7f4f97-bhtrn    0/1     Running   6          7m53s
phpmyadmin-mariadb-master-0   1/1     Running   0          7m53s
phpmyadmin-mariadb-slave-0    1/1     Running   0          7m53s

Set by default some liveness and readiness probe values.

Benefits

We can deploy the chart with default values.

Possible drawbacks

N/A

Applicable issues

• related [bitnami/phpmyadmin] not working with traefik ingress controller #2627

Additional information

N/A

Checklist

• Chart version bumped in Chart.yaml according to semver.
• Variables are documented in the README.md
• Title of the PR starts with chart name (e.g. [bitnami/chart])
• If the chart contains a values-production.yaml apart from values.yaml, ensure that you implement the changes in both files

[andresbono]

LGTM

[bitnami-bot]

I have just updated the bitnami images with the latest known immutable tags:

• "docker.io/bitnami/phpmyadmin:5.0.2-debian-10-r63"
• "docker.io/bitnami/apache-exporter:0.8.0-debian-10-r51"