Renovate v43 changed how postUpgradeTasks commands are executed -
they are now spawned directly as child processes rather than through
a shell. This breaks commands using shell builtins (export, if) and
compound statements.

Wrapping the affected commands in 'bash -c' restores shell execution.

This fixes 'spawn export ENOENT' and 'spawn if ENOENT' errors that
have been causing renovate-ci pipeline failures since the v43 upgrade.

Co-authored-by: Pierre Guinoiseau <pguinoiseau@gitlab.com>

chore(deps): update dependency jdx/mise to v2026.3.15

See merge request !1384

fix: wrap postUpgradeTasks shell commands in bash -c for Renovate v43 compat

See merge request !1387

## [3.14.3](https://gitlab.com/gitlab-com/gl-infra/common-ci-tasks/-/compare/...) (2026-03-27)

### Fixes

* wrap postUpgradeTasks shell commands in bash -c for Renovate v43 compat ([3a408715](3a408715))

### Dependencies

* **deps:** update dependency jdx/mise to v2026.3.15 ([87547d75](87547d75))