Re: [VOTE]Release Apache SeaTunnel(Incubating) 2.1.0

[Lifeng Nie]

+1
I checked：
[x] Download links are valid.
[x] Sha512 and PGP signatures are valid.
[x] Source code artifacts have correct names matching the current release.
[x] LICENSE and NOTICE files are correct for each SeaTunnel repo.
[x] All files have license headers.
[x] No compiled archives bundled in source archive.