domainaware/parsedmarc 10.4.3 on GitHub

Bumped the mailsuite floor to >=2.3.1, picking up the fix for mailsuite.utils.parse_email() raising TypeError instead of ValueError("Not an email") on unparseable (non-email) input under mail-parser 4.6.2 and later (seanthegeek/mailsuite#61) — a potential crash for anything reading non-email files through that API. mail-parser 4.6.2 changed its contract for unparseable input (it now returns a header-less parse result instead of the input string), so mailsuite's not-an-email detection never fired and parsing crashed on the missing From header. Every install of the previous parsedmarc release shipped the affected combination, because mailsuite 2.3.0 — the floor since parsedmarc 10.4.2 — itself requires mail-parser >=4.6.2. parsedmarc's own CLI and library report parsing never call that mailsuite API; they use parsedmarc's separate parse_email implementation, which rejects non-email input gracefully and behaves identically under both mailsuite versions, so this bump removes the affected combination from installs rather than fixing a parsedmarc crash.