CI: Update `kubectl` to v1.32.2. #12102

Job	Run time
changes	3s
test-go	4m 9s
Verify Doc generation	8s
Build	3m 53s
lua-lint	5s
Chart / Test	0s
Kubernetes (v1.28.15) / Kubernetes	44m 39s
Kubernetes (v1.29.12) / Kubernetes	44m 59s
Kubernetes (v1.30.8) / Kubernetes	44m 53s
Kubernetes (v1.31.4) / Kubernetes	45m 13s
Kubernetes chroot (v1.28.15) / Kubernetes CHROOT	44m 36s
Kubernetes (v1.32.0) / Kubernetes	48m 1s
Kubernetes chroot (v1.29.12) / Kubernetes CHROOT	44m 40s
Kubernetes chroot (v1.30.8) / Kubernetes CHROOT	44m 56s
Kubernetes chroot (v1.31.4) / Kubernetes CHROOT	44m 33s
Kubernetes chroot (v1.32.0) / Kubernetes CHROOT	45m 53s
	7h 40m 41s

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