print/latex-biber: rollback to 2.16 to be in sync with biblatex.sty

From [1]:
          Biber versions are closely coupled with Biblatex versions. You
          need to have the right combination of the two. Biber will warn
          you during processing if it encounters information which comes
          from a Biblatex version which is incompatible. Table 1 shows a
          compatibility matrix for the recent versions.

          Biber version | Biblatex version
               2.18     |   3.18
               2.17     |   3.17
               2.16     |   3.16
                      [...]
  [1] https://sourceforge.net/projects/biblatex-biber/files/biblatex-biber/development/documentation/biber.pdf/d  ownload

print/latex-biber/Makefile

@@ -1,7 +1,9 @@
 PORTNAME=	biber
-PORTVERSION=	2.17
+# https://sourceforge.net/projects/biblatex-biber/files/biblatex-biber/development/documentation/biber.pdf/download
+# Keep this in-sync with biblatex.sty (currently at 3.16).
+PORTVERSION=	2.16
+PORTEPOCH=	1
 DISTVERSIONPREFIX=	v
-PORTREVISION=	2
 CATEGORIES=	print perl5
 PKGNAMEPREFIX=	latex-
 DIST_SUBDIR=	TeX

print/latex-biber/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1645567239
-SHA256 (TeX/plk-biber-v2.17_GH0.tar.gz) = 1ee7efdd8343e982046f2301c1b0dcf09e1f9a997ac86ed1018dcb41d04c9e88
-SIZE (TeX/plk-biber-v2.17_GH0.tar.gz) = 1607708
+TIMESTAMP = 1673615863
+SHA256 (TeX/plk-biber-v2.16_GH0.tar.gz) = 57111ebc6d0d1933e55d3fe1a92f8ef57c602388ae83598a8073c8a77fd811e2
+SIZE (TeX/plk-biber-v2.16_GH0.tar.gz) = 1594209