🔧 fix(ci): bump cargo-zigbuild to 0.23.0 to skip --fix-cortex-a53-843419

[jpmcb]

cargo-zigbuild 0.23.0 is the first release that skips rustc's -Wl,--fix-cortex-a53-843419 for aarch64-unknown-linux-musl
(rust-lang/rust#155453), which zig's linker rejects; below it, every linux/arm64 cross-compile failed at the link step.

cc @yeazelm - FYI this should fix the builds in CI around:

error: linking with `/root/.cache/cargo-zigbuild/0.19.8/zigcc-aarch64-unknown-linux-musl-fec1.sh` failed: exit status: 1
  |
  = note:  "/root/.cache/cargo-zigbuild/0.19.8/zigcc-aarch64-unknown-linux-musl-fec1.sh" "-Wl,--fix-cortex-a53-843419" "<sysroot>/lib/rustlib/aarch64-unknown-linu

error: could not compile `tapesctl` (bin "tapesctl") due to 1 previous error
! exit code: 101

Closes PCC-1267

[greptile-apps]

Greptile Summary

The PR completes the CI toolchain fix by pairing cargo-zigbuild 0.23.0 with a Rust 1.88 base image.

• Updates the shared Dagger Rust image from 1.85 to 1.88.
• Updates cargo-zigbuild from 0.19.8 to 0.23.0.
• Documents the compatibility requirement and preserves the existing rustup target-installation sequence.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains; cargo-zigbuild now installs under the Rust 1.88 image before the source tree and its stable toolchain override are introduced.

Important Files Changed

Filename	Overview
.dagger/main.go	Updates the shared CI and release container to compatible Rust and cargo-zigbuild versions, resolving the previously reported installation failure.

_{Reviews (2): Last reviewed commit: "🔧 fix(ci): bump cargo-zigbuild to 0.23...." | Re-trigger Greptile}

[linear-code]

PCC-1267