Standard weekly patch release

[1.3.5] - 2021-06-08

Added

• Added warning to Training Step output (#7779)

Fixed

• Fixed LearningRateMonitor + BackboneFinetuning (#7835)
• Minor improvements to apply_to_collection and type signature of log_dict (#7851)
• Fixed docker versions (#7834)
• Fixed sharded training check for fp16 precision (#7825)
• Fixed support for torch Module type hints in LightningCLI (#7807)

Changed

• Move training_output validation to after train_step_end (#7868)

Contributors

@Borda, @justusschock, @kandluis, @mauvilsa, @shuyingsunshine21, @tchaton

If we forgot someone due to not matching commit email with GitHub account, let us know :]