chore: Add a note in the PR welcome announcing the summer vacation (#… #1197

Job	Run time
build	31m 22s
trivy-scan / Trivy - ubuntu-latest - fs	1m 22s
trivy-scan-keda (ubuntu-latest) / Trivy - ubuntu-latest - image ghcr.io/kedacore/keda:main	33s
trivy-scan-keda (ARM64) / Trivy - ARM64 - image ghcr.io/kedacore/keda:main	22s
trivy-scan-metrics-server (ARM64) / Trivy - ARM64 - image ghcr.io/kedacore/keda-metrics-apiserver:main	23s
trivy-scan-metrics-server (ubuntu-latest) / Trivy - ubuntu-latest - image ghcr.io/kedacore/keda-metrics-apiserver:main	34s
validate / Run e2e test	1h 18m 10s
validate-k8s-versions / ubuntu-latest (v1.23) / Validate k8s-v1.23	7m 16s
validate-k8s-versions / ubuntu-latest (v1.24) / Validate k8s-v1.24	7m 40s
validate-k8s-versions / ubuntu-latest (v1.25) / Validate k8s-v1.25	8m 56s
validate-k8s-versions / ubuntu-latest (v1.26) / Validate k8s-v1.26	7m 25s
validate-arm64 / ARM64 / Validate k8s-v1.26	5m 25s
	2h 29m 28s

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