ci: Remove `--forbid-only` from install:all call
ci: Remove `--forbid-only` from install:all call

  This option was mistakenly added to a `yarn install:all` call when it
  should only be used with test commands.

cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop,cozy-labs/cozy-desktop