Version 3.1.0

[dlstadther]

Description

Bump minor release version

Proposed release notes:

# 3.1.0

## Added
### luigi
* Documentation guidance around release version increments #3074
* Add support for naming tasks in `@requires` #3077
* Add `traceback_max_length` parameter for error email notifications #3086
* Document cause of `Unfulfilled dependency` error #3105
* Add additional `OptionalParameter` datatype options #3079
* UI: Add rerun command snippet on "show error" modal #3117
* Add support for updating default config parser after loading luigi #3135
* Allow `batch_email.email_interval` to be set in config as `email-internal-minutes` #3125
* Allow `TimeDeltaParameter` to accept input as "seconds" #3125
* Add `EnumListParameter` to top-level attribute imports #3144
* Enable `metrics_custom_import` for `MetricCollectors` #3146
* Improve warning when a parameter is not consumed by a task #3170

### luigi.contrib
* Add `configure_job` BigQuery property #3098
* Add parquet support to BigQuery #3099
* Add network retry logic to BigQuery #3088
* Add `run_task_kwargs` property to ECS #3083
* Add `pickle_protocol` attribute and configuration option to Spark #3001
* Add `pg8000` driver support to Postgres #3142


## Fixed
### luigi
* Fix default value for `task.disable_window` #3081
* Fix deconstructor of `LocalTarget` when `is_tmp` attribute dne #3085
* Improved documentation reference to `luigi.format.Nop` import #3047
* Fix Python 3.10 deprecation warnings #3150
* Remove unnecessary extra call to `cls.get_task_namespace()` #3129
* Fix documentation typo in `notifications_test.py` #3151
* Fix docs ci #3158
* Fix task history rendering #3153
* Move `max_shown_tasks` and `max_graph_nodes` documentation to correct section #3156
* Fix ability to subclass `Task`'s `Register` metaclass #3154
* Replace legacy TravicCI readme badge with GithubActions #3159

### luigi.contrib
* Fix apache ci
    * #3091
    * #3113
* Fix documentation typo in sqla #3110
* Fix spark cluster mode error for missing path #3111
* Fix connection object passed to `rdbms.CopyToTable`'s `_add_metadata_columns()` #3011


## Removed
### luigi
* Remove `@Tarrasch` from codeowners #3127


## Changed
### luigi
* Update license copyright year #3108
* Improve error message on parsing default parameter value #3115
* Group tasks by task class in svg graph #3122
* Upgrade `tenacity` version #3147
* Enable task search to be case insensitive #3157

### luigi.contrib
* Update ExternalPythonProgramTask parameters to `OptionalParameter` #3130
* Allow newer versions of `prometheus-client` package #3163

Motivation and Context

There hasn't been a Luigi release since April 2021

Have you tested this? If so, how?

(release only)

[dlstadther]

@honnix , could i get a review in order to put out another release?

[honnix]

Thank you for preparing this. To double check, there is no breaking change, right?

[adrien-berchet]

Any update on this? As far as I can see there is no breaking change in this release.

[dlstadther]

Thank you so much, @rafaelraposospot ! I got caught up with life things and totally forgot about this; thank you for taking it over the finish line!