Fix Quarto Docs CI: swap invalid param for RSPM binary repo

[Copilot]

The "Quarto Docs 📕" job was failing because deps-installation-method: setup-r-dependencies is not a valid input for the pinned insightsengineering/setup-r-dependencies@47235b81 action version (silently ignored), leaving pak to compile Deriv from source — which fails due to missing internal R API symbols (R_ClosureFormals, Rf_allocLang) in the build environment.

Changes

• .github/workflows/docs.yaml: Remove the unsupported deps-installation-method input; replace with repository-list pointing to the Posit Package Manager binary repo for Ubuntu 22.04 (jammy):

- name: Install dependencies ⛓️
  uses: insightsengineering/setup-r-dependencies@47235b81d6af3f63d38523dd1f8c09dc9150b76a
  with:
    repository-list: https://packagemanager.posit.co/cran/__linux__/jammy/latest

This directs pak to install pre-built binaries instead of compiling from source, bypassing the Deriv compilation failure.

[shajoezhu]

lgtm

[github-actions]

Code Coverage Summary

Filename            Stmts    Miss  Cover    Missing
----------------  -------  ------  -------  ---------
R/fda-table_02.R       25       1  96.00%   77
R/utils.R              40      40  0.00%    13-102
TOTAL                  65      41  36.92%

Diff against main

Filename      Stmts    Miss  Cover
----------  -------  ------  --------
TOTAL             0       0  +100.00%

Results for commit: 4f90b11

Minimum allowed coverage is 80%

♻️ This comment has been updated with latest results

[github-actions]

Unit Tests Summary

28 tests    1 ✅  41s ⏱️
28 suites  27 💤
 1 files     0 ❌

Results for commit 4f90b11.

♻️ This comment has been updated with latest results.

[shajoezhu]

lgtm