FreeBSD/src 40928c1contrib/tzdata australasia asia

contrib/tzdata: import tzdata 2025a

Changes: https://github.com/eggert/tz/blob/2025a/NEWS

Approved by:    so
Security:       FreeBSD-EN-25:03.tzdata

(cherry picked from commit 46226b0162ba03986b1de2c790804b37dd8e64d6)
(cherry picked from commit a158d26e89f2e3274ba1064e3fd6b341c6fcb07c)
DeltaFile
+61-52contrib/tzdata/australasia
+81-30contrib/tzdata/asia
+81-3contrib/tzdata/NEWS
+27-13contrib/tzdata/theory.html
+37-2contrib/tzdata/checktab.awk
+17-15contrib/tzdata/Makefile
+24-3contrib/tzdata/southamerica
+10-0contrib/tzdata/factory
+6-3contrib/tzdata/northamerica
+3-6contrib/tzdata/zonenow.tab
+4-4contrib/tzdata/leap-seconds.list
+4-4contrib/tzdata/leapseconds
+3-3contrib/tzdata/zone1970.tab
+4-0contrib/tzdata/etcetera
+1-1contrib/tzdata/checknow.awk
+1-1contrib/tzdata/europe
+2-0contrib/tzdata/antarctica
+1-1contrib/tzdata/version
+1-1contrib/tzdata/zone.tab
+368-14219 files

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