Prepare release notes for `6.0.0-dev13` #1606

Job	Run time
Format and License Checks	1m 47s
Azure Linux CI	23m 56s
CI (virtual, default, self-hosted, 1ES.Pool=gha-virtual-ccf-sub, --user root --publish-all --cap-...	24m 23s
CI (snp, default, self-hosted, 1ES.Pool=gha-virtual-ccf-sub, --user root --publish-all --cap-add ...	4m 38s
	54m 44s

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