Update: Next micro version (0.6.12).
The following are the commands that I ran to make this change.
# find build/ level_? specifications/ documents/ licenses/ -type f -exec sed -i -e 's|0\.6\.11|0.6.12|g' '{}' ';'
# find build/ level_? specifications/ documents/ licenses/ -type f -exec sed -i -e 's|^version_micro 11|version_micro 12|g' '{}' ';'
# find level_3/ -name common.h -exec sed -i -e 's|_program_version_micro_s F_string_ascii_1_s F_string_ascii_1_s|_program_version_micro_s F_string_ascii_1_s F_string_ascii_2_s|g' '{}' ';'
# find level_3/ -name common.h -exec sed -i -e 's|_program_version_micro_s_length (F_string_ascii_1_s_length + F_string_ascii_1_s_length)|_program_version_micro_s_length (F_string_ascii_1_s_length + F_string_ascii_2_s_length)|g' '{}' ';'