Scalameta v4.8.15

Fix leading-infix handling

• ScannerTokens: introduce a line-indent region (#3422) @kitbellew
• ScannerTokens: improve getIfCanProduceLF (#3416) @kitbellew
• ScannerTokens: improve obtaining lastNewlinePos (#3419) @kitbellew
• ScannerTokens: make isLeadingInfix compliant (#3411) @kitbellew
• ScannerTokens: minor refactor with ws scanning (#3421) @kitbellew
• ScalametaParser: minor refactor with infix parsing (#3420) @kitbellew
• ScannerTokens: explicitly handle null next (#3417) @kitbellew
• ScannerTokens: compute nextIndent once (#3418) @kitbellew
• FewerBracesSuite: use tname instead of Term.Name (#3415) @kitbellew
• Use EOL/AtEOL instead of LF or LFLF in matching (#3414) @kitbellew
• ScannerTokens: use rs for matched regions (#3410) @kitbellew
• ScannerTokens: reimplement multilineCommentIndent (#3405) @kitbellew
• TokenIterator: replace {current,peek}Indentation (#3406) @kitbellew
• ScannerTokens: use original regions, not matched (#3408) @kitbellew
• ScalametaParser: in refinementInBraces, simplify (#3407) @kitbellew

Bug fixes

• fix: don't emit implicit conversion occurrence when qualifier in synthetic apply (#3412) @kasiaMarek
• CharArrayReader: allow high-surrogate in squotes (#3404) @kitbellew
• CharArrayReader: move readUnicodeChar to companion (#3403) @kitbellew

Dependency updates

• Update mdoc, sbt-mdoc to 2.5.1 (#3400) @scalameta-bot
• Update coursier to 2.1.8 (#3399) @scalameta-bot
• Update scalafmt-core to 3.7.17 (#3401) @scalameta-bot
• Update sbt-npm-package to 0.2.0 (#3398) @scalameta-bot
• Update sbt-assembly to 2.1.5 (#3397) @scalameta-bot
• build(deps): bump actions/setup-java from 3 to 4 (#3396) @dependabot