python3-tzdata: Upgrade 2026.5 -> 2026.6

Upgrade to release 2026.6:

- Cuba will not fall back 2026-11-01; stays on -04 through
  2027-11-07.
- No more leap seconds, and leap second tables no longer expire.
- Improve 1965/1966 data for Brazil.

Changes to future timestamps:

- Cuba will not fall back to -05 on 2026-11-01 and instead plans to
  maintain -04 through 2027-11-07.

Changes to past timestamps:

- In 1965 Brazil ended DST on 03-31 at 24:00 not 00:00, and in 1966
  it ended DST on 03-01 at 01:00 not 00:00.

Changes to documentation and commentary:

- Documentation and commentary now reflect leap seconds' demise.

Changes to commentary:

- Discussion on timekeeping in northwestern Ontario has been updated
  to reflect that provincial regulation has been issued to allow
  these areas to stay aligned with America/Winnipeg and follow
  Manitoba's adoption of year-round -05 after all.

- Discussion on timekeeping in Saskatchewan has been updated to
  document its new Time Act, 2026 which comes into force on
  2026-10-30. No change is expected.

Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>

meta-python/recipes-devtools/python/python3-tzdata_2026.6.bb

@@ -5,7 +5,7 @@ LIC_FILES_CHKSUM = "file://LICENSE;md5=804220b73c90950be376e7ff7b2066bb \
                     file://licenses/LICENSE_APACHE;md5=86d3f3a95c324c9479bd8986968f4327 \
                     "
 
-SRC_URI[sha256sum] = "8cc73c0a0bfca7dbfa59235d60b2eff82231dee33f53d206db1acd9173cfc0a7"
+SRC_URI[sha256sum] = "85d2cd9c09f81f0bb29db27759fc83af4f1e620efb814f8c5bf8b4cc4feece6d"
 
 inherit pypi python_setuptools_build_meta ptest-python-pytest