Update busybox for oci-import changes

[tianon]

See docker-library/busybox#188 (this is a companion to that)

I was planning to have this put the metadata commits directly on the master branch, but that's super racy, so I opted instead to create a separate meta-ARCH branch for each that we can instead cherry-pick from after we're certain we have all the builds and that they're all correct. 👀

[tianon]

Some example output for arm32v6 in that final "committing" stage:

+ date --date @1708637268 --rfc-email
+ GIT_AUTHOR_DATE=Thu, 22 Feb 2024 13:27:48 -0800
+ export GIT_AUTHOR_DATE GIT_COMMITTER_DATE=Thu, 22 Feb 2024 13:27:48 -0800
+ git branch -D meta-arm32v6
Deleted branch meta-arm32v6 (was e43e247).
+ git checkout -b meta-arm32v6
Switched to a new branch 'meta-arm32v6'
+ git rm --cached **/*.tar*
rm 'latest-1/musl/arm32v6/rootfs.tar.gz'
rm 'latest/musl/arm32v6/rootfs.tar.gz'
+ git diff --staged --name-only --exit-code
latest-1/musl/arm32v6/blobs/sha256/461d411de7876cfdf128f811777c85dd543305ccd7d56c8cfc3c1dfa5946a023
latest-1/musl/arm32v6/blobs/sha256/61f59067cdfe0c545fae7502917047079f6a876e78dcd0187c39928a1836a7d1
latest-1/musl/arm32v6/blobs/sha256/94f90368019e11514e9875c7b3593421417856e2b498d27aaa8d0b5b2f87b4ea
latest-1/musl/arm32v6/image-config.json
latest-1/musl/arm32v6/image-manifest.json
latest-1/musl/arm32v6/index.json
latest-1/musl/arm32v6/oci-layout
latest/musl/arm32v6/blobs/sha256/0bcc1b827b855c65eaf6e031e894e682b6170160b8a676e1df7527a19d51fb1a
latest/musl/arm32v6/blobs/sha256/7d205c11c6dd2dcafdc8f38f12db83ff61d6165cd69095f2918d31f1b587f8d5
latest/musl/arm32v6/blobs/sha256/d7e1102586fb0e4048aa13fa2b2dec0d046b4d252daf534b4465c028bec14698
latest/musl/arm32v6/image-config.json
latest/musl/arm32v6/image-manifest.json
latest/musl/arm32v6/index.json
latest/musl/arm32v6/oci-layout
+ git commit --message Update metadata for arm32v6
[meta-arm32v6 e43e247] Update metadata for arm32v6
 14 files changed, 134 insertions(+)
 create mode 120000 latest-1/musl/arm32v6/blobs/sha256/461d411de7876cfdf128f811777c85dd543305ccd7d56c8cfc3c1dfa5946a023
 create mode 120000 latest-1/musl/arm32v6/blobs/sha256/61f59067cdfe0c545fae7502917047079f6a876e78dcd0187c39928a1836a7d1
 create mode 120000 latest-1/musl/arm32v6/blobs/sha256/94f90368019e11514e9875c7b3593421417856e2b498d27aaa8d0b5b2f87b4ea
 create mode 100644 latest-1/musl/arm32v6/image-config.json
 create mode 100644 latest-1/musl/arm32v6/image-manifest.json
 create mode 100644 latest-1/musl/arm32v6/index.json
 create mode 100644 latest-1/musl/arm32v6/oci-layout
 create mode 120000 latest/musl/arm32v6/blobs/sha256/0bcc1b827b855c65eaf6e031e894e682b6170160b8a676e1df7527a19d51fb1a
 create mode 120000 latest/musl/arm32v6/blobs/sha256/7d205c11c6dd2dcafdc8f38f12db83ff61d6165cd69095f2918d31f1b587f8d5
 create mode 120000 latest/musl/arm32v6/blobs/sha256/d7e1102586fb0e4048aa13fa2b2dec0d046b4d252daf534b4465c028bec14698
 create mode 100644 latest/musl/arm32v6/image-config.json
 create mode 100644 latest/musl/arm32v6/image-manifest.json
 create mode 100644 latest/musl/arm32v6/index.json
 create mode 100644 latest/musl/arm32v6/oci-layout
+ git branch -D dist-arm32v6
Deleted branch dist-arm32v6 (was 6c1a204).
+ git checkout -b dist-arm32v6
Switched to a new branch 'dist-arm32v6'
+ git add -A .
+ git diff --staged --name-only --exit-code
latest-1/glibc/Dockerfile.builder
latest-1/musl/Dockerfile.builder
latest-1/musl/arm32v6/rootfs.tar.gz
latest-1/musl/busybox.tar.gz
latest-1/uclibc/Dockerfile.builder
latest/glibc/Dockerfile.builder
latest/musl/Dockerfile.builder
latest/musl/arm32v6/rootfs.tar.gz
latest/musl/busybox.tar.gz
latest/uclibc/Dockerfile.builder
+ git commit --message Builds for arm32v6
[dist-arm32v6 14f74ad] Builds for arm32v6
 10 files changed, 8 insertions(+), 6 deletions(-)
 create mode 100644 latest-1/musl/arm32v6/rootfs.tar.gz
 create mode 120000 latest-1/musl/busybox.tar.gz
 create mode 100644 latest/musl/arm32v6/rootfs.tar.gz
 create mode 120000 latest/musl/busybox.tar.gz