MFH: r512162, r512335

textproc/expat2: upgrade 2.2.6 -> 2.2.7

• exp-run by antoine

PR: 238864
Submitted by: Sergei Vyshenski <svysh.fbsd@gmail.com> (maintainer)
Reviewed by: koobs
Relnotes: https://github.com/libexpat/libexpat/blob/R_2_2_7/expat/Changes
Security: https://github.com/libexpat/libexpat/issues/186

		https://github.com/libexpat/libexpat/pull/262

textproc/expat2: upgrade 2.2.7 -> 2.2.8

PR: 240613
Submitted by: Sergei Vyshenski <svysh.fbsd@gmail.com> (maintainer)
Exp-Run by: antoine
Relnotes: https://github.com/libexpat/libexpat/blob/R_2_2_8/expat/Changes
Security: CVE-2019-15903

Approved by: ports-secteam