chore(deps): update dependency @earendil-works/pi-coding-agent to v0.84.1 (docker/codex-workspace) (#12157)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docker/codex-workspace/Dockerfile

@@ -4,7 +4,7 @@ FROM ubuntu:26.04@sha256:f3d28607ddd78734bb7f71f117f3c6706c666b8b76cbff7c9ff6e57
 ARG CODEX_VERSION=0.147.0
 ARG CLAUDE_CODE_VERSION=2.1.224
 ARG EVEN_TERMINAL_VERSION=0.8.1
-ARG PI_AGENT_VERSION=0.84.0
+ARG PI_AGENT_VERSION=0.84.1
 ARG OBSIDIAN_HEADLESS_VERSION=0.0.14
 ARG GH_VERSION=2.97.0
 ARG GHQ_VERSION=1.10.1