Support monolog v3

[koriym]

• monolog v3サポート
• monolog v3のサポートがないと最新版がインストールできないライブラリ（google/apiclient)がインストール可能になります。

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (fa11420) 100.00% compared to head (ae0189e) 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## 1.x #421 +/- ## =========================================== Coverage 100.00% 100.00% Complexity 242 242 =========================================== Files 54 54 Lines 812 812 =========================================== Hits 812 812 ```

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