Upgrade blackbox exporter, add ICMP probing support

Upgrade the blackbox exporter to the latest version (no notable changes in the upstream changelog from 0.23.0 to 0.25.0)

Add an icmp probing setup (needs the NET_RAW capability, see https://artifacthub.io/packages/helm/prometheus-community/prometheus-blackbox-exporter#to-7-0-0)

Relevant part of the helm diff:

------------- diff for cluster-components/values/admin-rke2.yaml -------------

     _        __  __
   _| |_   _ / _|/ _|  between /tmp/swh-chart.cluster-components.zhl5hMHG/admin-rke2.yaml.before, 31 documents
 / _' | | | | |_| |_       and /tmp/swh-chart.cluster-components.zhl5hMHG/admin-rke2.yaml.after, 31 documents
| (_| | |_| |  _|  _|
 \__,_|\__, |_| |_|   returned three differences
        |___/

data.blackbox.yaml  (v1/ConfigMap/cattle-monitoring-system/test-blackbox-exporter)
  ± value change in multiline text (one insert, no deletions)
    +   icmp:
    +     icmp:
    +       preferred_ip_protocol: ip4
    +     prober: icmp


spec.template.metadata.annotations.checksum/config  (apps/v1/Deployment/cattle-monitoring-system/test-blackbox-exporter)
  ± value change
    - f617cc2a5655323880cfbc52e18ad642e11aa434febd5742c71bed97426496c1
    + 79b53b510f35513d57a0e00db8441c0a9d5a7c28e0f24f2fa6f9b0c9332ad939

spec.template.spec.containers.blackbox-exporter.securityContext.capabilities  (apps/v1/Deployment/cattle-monitoring-system/test-blackbox-exporter)
  + one map entry added:
    add:
    - NET_RAW

approved this merge request

added 4 commits

• c8f55fd0 - 1 commit from branch production
• ec1bb85d - Add proxy-body-size annotation on deposit ingresses
• 14781edc - Update blackbox exporter chart to 8.17.0
• 5c4f9a1c - Add icmp probing to blackbox exporter

Compare with previous version

added 2 commits

• a695675e - Update blackbox exporter chart to 8.17.0
• 40371b0f - Add icmp probing to blackbox exporter

Compare with previous version

merged manually