spire-0.3.0: Bump spire chart to v0.3.0

A Helm chart for deploying the complete Spire stack including: spire-server, spire-agent, spiffe-csi-driver, spiffe-oidc-discovery-provider and spire-controller-manager.

What's Changed

• Only check for version bump if PR targets release branch by @marcofranssen in spiffe/helm-charts#33
• Clarify Chart version increments in CONTRIBUTING.md by @marcofranssen in spiffe/helm-charts#40
• Align healthz ports and checks across containers by @marcofranssen in spiffe/helm-charts#39
• Basic Prometheus support by @kfox1111 in spiffe/helm-charts#28
• Bump actions/checkout from 3.2.0 to 3.3.0 by @dependabot in spiffe/helm-charts#57
• Fix spire-controller-manager healthz port by @marcofranssen in spiffe/helm-charts#43
• Allow to configure a priorityClassName for Daemonsets by @marcofranssen in spiffe/helm-charts#58
• Switch hostpath to emptydir in spire-server by @kfox1111 in spiffe/helm-charts#65
• Bump spire chart to v0.3.0 by @marcofranssen in spiffe/helm-charts#64

Full Changelog: spiffe/helm-charts@spire-0.2.0...spire-0.3.0