[572885] Update target platforms to use Batik 1.14 and Xerces 2.12

Use Orbit's "S" repo for 2021-06 M1, the only only with both Batik
1.14 and Xerces 2.12.

See:
- https://bugs.eclipse.org/bugs/show_bug.cgi?id=571841 (Batik 1.14 in Orbit)
- https://git.eclipse.org/r/c/orbit/orbit-recipes/+/178654 (Xerces 2.12 in Orbit)

Bug: https://bugs.eclipse.org/bugs/show_bug.cgi?id=572885
Change-Id: I4972b4f2168df652950cb4116050d73ccf0cb86b
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>