upgrade alpine base image from v3.17.3 to v3.18.0 including upgrade of dovecot packages from v2.3.20-r7 to v2.3.20-r10 & socat package from v1.7.4.4-r0 to v1.7.4.4-r1 (see below)
https://web.archive.org/web/20230514082817/https://git.alpinelinux.org/aports/commit/main/dovecot?h=3.18-stable&id=5635bde4d79d90f7acea4a66e301e14b84ae1e2b
https://web.archive.org/web/20230514082840/https://git.alpinelinux.org/aports/commit/main/dovecot?h=3.18-stable&id=84a227baf001b6e0208e3352b294e4d7a40e93de
https://web.archive.org/web/20230514082852/https://git.alpinelinux.org/aports/commit/main/dovecot?h=3.18-stable&id=3fa68c7d72ac6d5f6bf03a4e43bce5c4b3434ff6
https://web.archive.org/web/20230514082941/https://git.alpinelinux.org/aports/commit/main/socat?h=3.18-stable&id=84a227baf001b6e0208e3352b294e4d7a40e93de