config: bump forbiddenapis to 2.6
config: bump forbiddenapis to 2.6

romani/checkstyle,romani/checkstyle,checkstyle/checkstyle,checkstyle/checkstyle,romani/checkstyle,romani/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,romani/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,romani/checkstyle,checkstyle/checkstyle,rnveach/checkstyle,rnveach/checkstyle,rnveach/checkstyle,checkstyle/checkstyle,rnveach/checkstyle