Update dependency backoff to v2

[smith-ntc]

This PR contains the following updates:

Package	Type	Update	Change
backoff	dependencies	major	^1.11.1 -> ^2.0.0

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Release Notes

litl/backoff

v2.1.2

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Fixed

• Don't use importlib.metadata for version https://github.com/litl/backoff/issues/166

v2.1.1

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Fixed

• Fix bug with max_tries/max_time callables https://github.com/litl/backoff/issues/164

v2.1.0

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Changed

• Get max_tries/max_time values for every call fixes #​160 (from @​jvrsantacruz)

v2.0.1

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Changed

• Allow None for jitter keyword arg (typing)

v2.0.0

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Added

• Add raise_on_giveup keyword arg for decorators
• Add backoff.runtime wait generator for dynamically setting wait times based
  on target function return value or exception details

Changed

• Improve type hints for on_success, on_backoff, on_giveup handlers
• Use decorator-specific detail and handler type hints
• Optionally use typing_extensions for python 3.7 type hinting
• Drop python 3.6 support
• Add python 3.10 support

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Configuration

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This PR has been generated by Renovate Bot.

[smith-ntc]

⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

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The artifact failure details are included below:

File name: poetry.lock

Updating dependencies
Resolving dependencies...

  SolverProblemError

  The current project's Python requirement (>=3.6.2,<4.0.0) is not compatible with some of the required packages Python requirement:
    - backoff requires Python >=3.7,<4.0, so it will not be satisfied for Python >=3.6.2,<3.7
    - backoff requires Python >=3.7,<4.0, so it will not be satisfied for Python >=3.6.2,<3.7
    - backoff requires Python >=3.7,<4.0, so it will not be satisfied for Python >=3.6.2,<3.7
    - backoff requires Python >=3.7,<4.0, so it will not be satisfied for Python >=3.6.2,<3.7
    - backoff requires Python >=3.7,<4.0, so it will not be satisfied for Python >=3.6.2,<3.7
  
  Because no versions of backoff match >2.0.0,<2.0.1 || >2.0.1,<2.1.0 || >2.1.0,<2.1.1 || >2.1.1,<2.1.2 || >2.1.2,<3.0.0
   and backoff (2.0.0) requires Python >=3.7,<4.0, backoff is forbidden.
  And because backoff (2.0.1) requires Python >=3.7,<4.0, backoff is forbidden.
  And because backoff (2.1.0) requires Python >=3.7,<4.0
   and backoff (2.1.1) requires Python >=3.7,<4.0, backoff is forbidden.
  So, because backoff (2.1.2) requires Python >=3.7,<4.0
   and circuit-maintenance-parser depends on backoff (^2.0.0), version solving failed.

  at /usr/local/poetry/1.1.13/venv/lib/python3.10/site-packages/poetry/puzzle/solver.py:241 in _solve
      237│             packages = result.packages
      238│         except OverrideNeeded as e:
      239│             return self.solve_in_compatibility_mode(e.overrides, use_latest=use_latest)
      240│         except SolveFailure as e:
    → 241│             raise SolverProblemError(e)
      242│ 
      243│         results = dict(
      244│             depth_first_search(
      245│                 PackageNode(self._package, packages), aggregate_package_nodes

  • Check your dependencies Python requirement: The Python requirement can be specified via the `python` or `markers` properties
    
    For backoff, a possible solution would be to set the `python` property to ">=3.7,<4.0.0"
    For backoff, a possible solution would be to set the `python` property to ">=3.7,<4.0.0"
    For backoff, a possible solution would be to set the `python` property to ">=3.7,<4.0.0"
    For backoff, a possible solution would be to set the `python` property to ">=3.7,<4.0.0"
    For backoff, a possible solution would be to set the `python` property to ">=3.7,<4.0.0"

    https://python-poetry.org/docs/dependency-specification/#python-restricted-dependencies,
    https://python-poetry.org/docs/dependency-specification/#using-environment-markers

[glennmatthews]

Blocked by #178.