K8SPG-873: add `env` and `envFrom` fields to backups and restores #5425

Job	Run time
runner / suggester / goimports-reviser	18s
runner / misspell	24s
runner / shellcheck	9s
runner / suggester / gofmt	10s
runner / alex	36s
runner / suggester / golangci-lint	3m 2s
runner / suggester / shfmt	23s
runner / manifests	1m 56s
	6m 58s

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