chore(release): update changelogs for 0.13.0-rc2 release #901

Job	Run time
Build	1m 36s
Integration (1.6.*, 5.19/stable, lxd, 5.19, 2.9)	32m 3s
Integration (1.6.*, 5.19/stable, lxd, 5.19, 3)	37m 48s
Integration (1.6.*, 5.19/stable, microk8s, 1.28, 2.9)	10m 18s
Integration (1.6.*, 5.19/stable, microk8s, 1.28-strict, 3)	11m 57s
Integration (1.7.*, 5.19/stable, lxd, 5.19, 2.9)	35m 57s
Integration (1.7.*, 5.19/stable, lxd, 5.19, 3)	41m 58s
Integration (1.7.*, 5.19/stable, microk8s, 1.28, 2.9)	11m 53s
Integration (1.7.*, 5.19/stable, microk8s, 1.28-strict, 3)	12m 6s
Integration (1.8.*, 5.19/stable, lxd, 5.19, 2.9)	37m 45s
Integration (1.8.*, 5.19/stable, lxd, 5.19, 3)	44m 18s
Integration (1.8.*, 5.19/stable, microk8s, 1.28, 2.9)	11m 29s
Integration (1.8.*, 5.19/stable, microk8s, 1.28-strict, 3)	11m 6s
	5h 0m 14s

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