Release v20250220003807-3c4d4d8481-almalinux8-aarch64-clang17-full-lto

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003750-3c4d4d8481-almalinux8-aarch64-clang19-full-lto

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003746-3c4d4d8481-almalinux8-aarch64-clang17

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003738-3c4d4d8481-almalinux8-aarch64-clang19

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003706-3c4d4d8481-almalinux8-x86_64-gcc13

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003704-3c4d4d8481-ubuntu2404-x86_64-clang19

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003640-3c4d4d8481-almalinux8-x86_64-clang17

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003632-3c4d4d8481-almalinux8-x86_64-gcc11

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003628-3c4d4d8481-almalinux8-x86_64-clang19

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.

Release v20250220003624-3c4d4d8481-ubuntu2204-x86_64-gcc11

Bump protobuf to 21.12 (#302)

Protobuf 22+ drops support for autotools build and requires changes to
how we build protobuf, so just bumping to 21.12 first.