package/icu: bump version to 67-1

package/icu: bump version to 67-1

Release notes:
http://site.icu-project.org/download/66
http://site.icu-project.org/download/67

Removed patches applied upstream:

0005:
https://github.com/unicode-org/icu/commit/4a3a457b38cd828b7b3fa4fdbc6e2504a57275e9

0006 - 0008:
https://github.com/unicode-org/icu/commit/b7facd487444508c5724f8217d53bc41a76a8950

Reformatted hash file, locally computed tarball hash, upstream does not
provide hashes anymore. Updated license hash due to update in copyright
years (2019 -> 2020):
https://github.com/unicode-org/icu/commit/d95621c57f2becc1efd1be1d5c914624a715dac0

Signed-off-by: Bernd Kuhls <bernd.kuhls@t-online.de>
[yann.morin.1998@free.fr: further explain the license hash change]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>