Update crate serial2

Author: bors

se/ri/serial2

@@ -43,3 +43,4 @@
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 {"name":"serial2","vers":"0.2.27","deps":[{"name":"assert2","req":"^0.3.11","features":[],"optional":false,"default_features":true,"target":null,"kind":"dev"},{"name":"cfg-if","req":"^1.0.0","features":[],"optional":false,"default_features":true,"target":"cfg(unix)","kind":"normal"},{"name":"libc","req":"^0.2.109","features":[],"optional":false,"default_features":true,"target":"cfg(unix)","kind":"normal"},{"name":"serde","req":"^1.0","features":["derive"],"optional":true,"default_features":true,"target":null,"kind":"normal"},{"name":"serde_json","req":"^1.0.108","features":[],"optional":false,"default_features":true,"target":null,"kind":"dev"},{"name":"winapi","req":"^0.3.9","features":["commapi","fileapi","handleapi","ioapiset","std","synchapi","winbase","winerror","winreg"],"optional":false,"default_features":true,"target":"cfg(windows)","kind":"normal"}],"cksum":"cfe881b4dcdd6996fb8d3cbfc3ee37286222b36fb6c789e8604b67360120aa99","features":{"doc":[],"doc-cfg":[],"rs4xx":[],"unix":[],"windows":[]},"features2":{"serde":["dep:serde"]},"yanked":false,"v":2}
 {"name":"serial2","vers":"0.2.28","deps":[{"name":"assert2","req":"^0.3.11","features":[],"optional":false,"default_features":true,"target":null,"kind":"dev"},{"name":"cfg-if","req":"^1.0.0","features":[],"optional":false,"default_features":true,"target":"cfg(unix)","kind":"normal"},{"name":"libc","req":"^0.2.109","features":[],"optional":false,"default_features":true,"target":"cfg(unix)","kind":"normal"},{"name":"serde","req":"^1.0","features":["derive"],"optional":true,"default_features":true,"target":null,"kind":"normal"},{"name":"serde_json","req":"^1.0.108","features":[],"optional":false,"default_features":true,"target":null,"kind":"dev"},{"name":"winapi","req":"^0.3.9","features":["commapi","fileapi","handleapi","ioapiset","std","synchapi","winbase","winerror","winreg"],"optional":false,"default_features":true,"target":"cfg(windows)","kind":"normal"}],"cksum":"8cd0c773455b60177d1abe4c739cbfa316c4f2f0ef37465befcb72e8a15cdd02","features":{"doc":[],"doc-cfg":[],"rs4xx":[],"unix":[],"windows":[]},"features2":{"serde":["dep:serde"]},"yanked":false,"v":2}
+{"name":"serial2","vers":"0.2.29","deps":[{"name":"assert2","req":"^0.3.11","features":[],"optional":false,"default_features":true,"target":null,"kind":"dev"},{"name":"cfg-if","req":"^1.0.0","features":[],"optional":false,"default_features":true,"target":"cfg(unix)","kind":"normal"},{"name":"libc","req":"^0.2.109","features":[],"optional":false,"default_features":true,"target":"cfg(unix)","kind":"normal"},{"name":"serde","req":"^1.0","features":["derive"],"optional":true,"default_features":true,"target":null,"kind":"normal"},{"name":"serde_json","req":"^1.0.108","features":[],"optional":false,"default_features":true,"target":null,"kind":"dev"},{"name":"winapi","req":"^0.3.9","features":["commapi","fileapi","handleapi","ioapiset","std","synchapi","winbase","winerror","winreg"],"optional":false,"default_features":true,"target":"cfg(windows)","kind":"normal"}],"cksum":"c7d1d08630509d69f90eff4afcd02c3bd974d979225cbd815ff5942351b14375","features":{"doc":[],"doc-cfg":[],"rs4xx":[],"unix":[],"windows":[]},"features2":{"serde":["dep:serde"]},"yanked":false,"v":2}