fix: update dependency nodemailer to v9

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
nodemailer (source)	^8.0.0 → ^9.0.0

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Release Notes

nodemailer/nodemailer (nodemailer)

v9.1.0

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Features

• mailer: cap recipients per message with maxRecipients (7279ac8)

Bug Fixes

• addressparser: handle address lists in linear time (9116da9)
• addressparser: terminate the domain at an RFC 5322 comment (902b63e)
• mime-node: apply UTS-46 mapping when encoding a domain (259c32d)
• mime-node: dedupe envelope recipients in linear time (7cc38af)
• mime-node: flatten parsed addresses without concat.apply (83b8c48)
• mime-node: keep the recipient dedupe linear across address headers (34da642)
• mime-node: keep URL delimiters away from the domain mapper (b212ac4)

v9.0.6

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Bug Fixes

• addressparser: recover the addr-spec from an angle-addr holding whitespace (e989a22)
• harden copies of user supplied keys and URL fetching (2f667f4)

v9.0.5

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Bug Fixes

• ci: retrigger the workflows dropped during the Actions outage (85d16c1)
• mailer: escape specials in List-* header comments (#​1842) (75913bb)
• mime-funcs: star the continuation key of a restarted parameter line (36bcf1a)
• mime-node: keep control chars out of header values and msg-id headers (15cf6d1)
• mime: encode DEL in header parameters and List-* comments (cf69430)
• mime: keep control chars out of the remaining header positions (5ed9d26)
• mime: normalize an address parsed out of a string as well (63685f7)
• mime: normalize an address so header and envelope agree (a9343b4)
• mime: stop a header key callback and the dkim tags from injecting (b7d772e)

v9.0.4

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Bug Fixes

• mime-funcs: do not let an unpaired surrogate consume the next character (9797f7f)
• mime-funcs: keep any surrogate pair intact when chunking base64 mime words (#​1838) (5bd3a65)
• mime-funcs: percent encode unpaired surrogates in header parameter values (78f4aa2)
• mime-node: escape backslash and quote in the Content-Type name parameter (#​1837) (adcfc4f)
• mime: encode HT/CR/LF in header parameter values instead of quoting them (#​1840) (5bc9cab)

v9.0.3

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Bug Fixes

• smtp-connection: harden STARTTLS upgrade and secure socket handling (#​1835) (07d8253)

v9.0.2

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Bug Fixes

• addressparser: keep operator chars inside an address-literal as text (#​1829) (9ba1064)
• harden smtp-connection low-severity issues (22ddcea)
• harden smtp-connection response parsing and socket lifecycle (68860b9)
• prevent SES transport callback double-invocation and hang on sync errors (#​1831) (9517bc5)
• reject CRLF in HTTP proxy CONNECT destination to prevent request injection (6347b47)

v9.0.1

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Bug Fixes

• enforce disableFileAccess/disableUrlAccess for raw message option (a82e060)

v9.0.0

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⚠ BREAKING CHANGES

• HTTPS requests made while fetching remote content (attachment href/path URLs, OAuth2 token endpoints, HTTP/HTTPS proxy CONNECT) now validate the server's TLS certificate by default. Requests to hosts with self-signed, expired, or hostname-mismatched certificates that previously succeeded will now fail. Opt back out per request with tls.rejectUnauthorized=false (transport options, or a per-attachment tls option).

Bug Fixes

• replace deprecated url.parse with a WHATWG URL wrapper (0c080fb)
• validate TLS certificates by default when fetching remote content (6a947ac)

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