Add command to audit dependencies

[mrogenmoserTT]

No description provided.

[paulsc96]

I tested it on Cheshire, it works for me.

Only slight gripe is that conflicts are reported if a remote exists with and without .git suffix in different dependencies; perhaps this can be worked around:

Conflict: common_cells            -> check parents

$ bender parents common_cells
Parents found:
    cheshire               requires: ^1.38.0  at `https://github.com/pulp-platform/common_cells.git`
    apb                    requires: ^1.16.2  at `https://github.com/pulp-platform/common_cells.git`
    axi                    requires: ^1.37.0  at `https://github.com/pulp-platform/common_cells.git`
    axi_llc                requires: ^1.21.0  at `https://github.com/pulp-platform/common_cells.git`
    axi_riscv_atomics      requires: ^1.11.0  at `https://github.com/pulp-platform/common_cells.git`
    axi_rt                 requires: ^1.32.0  at `https://github.com/pulp-platform/common_cells.git`
    axi_stream             requires: ^1.21.0  at `https://github.com/pulp-platform/common_cells.git`
    axi_vga                requires: ^1.33.0  at `https://github.com/pulp-platform/common_cells`
    clic                   requires: ^1.26.0  at `https://github.com/pulp-platform/common_cells.git`
    clint                  requires: ^1.25.0  at `https://github.com/pulp-platform/common_cells.git`
    cva6                   requires: ^1.23.0  at `https://github.com/pulp-platform/common_cells`
    fpnew                  requires: ^1.21.0  at `https://github.com/pulp-platform/common_cells.git`
    fpu_div_sqrt_mvp       requires: ^1.13.1  at `https://github.com/pulp-platform/common_cells.git`
    idma                   requires: ^1.33.0  at `https://github.com/pulp-platform/common_cells.git`
    irq_router             requires: ^1.21.0  at `https://github.com/pulp-platform/common_cells.git`
    obi                    requires: ^1.38.0  at `https://github.com/pulp-platform/common_cells.git`
    obi_peripherals        requires: ^1.37.0  at `https://github.com/pulp-platform/common_cells.git`
    opentitan_peripherals  requires: ^1.25.0  at `https://github.com/pulp-platform/common_cells.git`
    register_interface     requires: ^1.21.0  at `https://github.com/pulp-platform/common_cells.git`
    riscv-dbg              requires: ^1.24.0  at `https://github.com/pulp-platform/common_cells.git`
    serial_link            requires: ^1.28.0  at `https://github.com/pulp-platform/common_cells.git`
    unbent                 requires: ^1.29.0  at `https://github.com/pulp-platform/common_cells.git`