Release v1.18.2

See kubernetes-announce@ and CHANGELOG/CHANGELOG-1.18.md for details.

SHA256 for kubernetes.tar.gz: f515c097acbdd69d02c5d365f73338f9403bd9c3eb4b050b58cb1084a121cde2 SHA512 for kubernetes.tar.gz: 2f8e853bd59731410259d5357d9969425fbbbea378bbe6cdd0f7a9ddf5c25924838300924b03ec15d6b9030be86bea9d26bb9b63078bf2c150b0bbc0859419d7

Additional binary downloads are linked in the CHANGELOG/CHANGELOG-1.18.md.