Snippets for aerc 0.22.0 from Alpine armv7

Sourced from https://build.alpinelinux.org/buildlogs/build-edge-armv7/community/aerc/aerc-0.22.0-r0.log.

• filters/colorize.c:497:39: warning: format '%lu' expects argument of type 'long unsigned int', but argument 2 has type 'size_t' {aka 'unsigned int'} [-Wformat=]
    497 |                 printf("id=colorize-%lu;", id);
        |                                     ~~^    ~~
        |                                       |    |
        |                                       |    size_t {aka unsigned int}
        |                                       long unsigned int
        |                                     %u