v4.13.1

Minor Changes

• Upgrade ansible-doctor 6.0.5 and pre-commit (#517)
• ansible-lint upgrade to 25.2.1 (#517)
• helper script for building releases (#518)
• nix: Adding direnv and nix configuration for easy setup of dev environment via nix-shell (#517)

Security Fixes

• ansible-core: Upgrade versions due to security alerts from dependbot (#517)

Bugfixes

• oradb_tzupgrade_pdbs: compose the list of PDBs in Ansible (#516)