Resolve "Frequent cert-manager-cainjector CPUThrottlingHigh alerts"

Closes #438 and #847

See merge request openappstack/openappstack!438

Resolve "Use single-sign-on chart release"

Closes #837

See merge request openappstack/openappstack!440

Resolve "Update WordPress chart"

Closes #781

See merge request openappstack/openappstack!429

Fixes: #438

Resolve "haveged installation fails consistently"

Closes #844

See merge request openappstack/openappstack!436

Update velero chart to 2.23.1

See merge request openappstack/openappstack!430

Update ingress-nginx chart to 3.34.0

See merge request openappstack/openappstack!431

Update metallb chart to 2.4.3

See merge request openappstack/openappstack!432

Update cert-manager chart to 1.4.0

See merge request openappstack/openappstack!434

Update loki chart to 2.5.2

See merge request openappstack/openappstack!433

Update promtail chart to 3.6.0

See merge request openappstack/openappstack!435

add unattended-upgrades to its own job so it does not interfere with apt installations in the pipeline

Resolve "Increase source-controller memory limit"

Closes #814

See merge request openappstack/openappstack!418

Resolve "Upgrade to alpine 3.14"

Closes #818

See merge request openappstack/openappstack!421

Resolve "CPUThrottlingHigh for nc-postgresql pod"

Closes #830

See merge request openappstack/openappstack!427