[ImgBot] Optimize images (#811)

*Total -- 6,801.55kb -> 5,130.16kb (24.57%)

/public/posts/gpu-pipline/flowchart_3.png -- 51.22kb -> 17.48kb (65.88%)
/public/posts/gpu-pipline/flowchart_2.png -- 46.40kb -> 16.03kb (65.45%)
/public/posts/gpu-pipline/zstd_benchmark.png -- 59.89kb -> 23.96kb (59.99%)
/public/posts/gpu-pipline/baseline.png -- 72.69kb -> 29.86kb (58.92%)
/public/posts/dask-detrending/indexing-data-selection.png -- 218.58kb -> 125.11kb (42.77%)
/public/posts/gpu-pipline/profiling_screenshot_dali.png -- 119.77kb -> 69.23kb (42.2%)
/public/posts/dask-detrending/input-array.png -- 104.21kb -> 65.91kb (36.76%)
/public/posts/xarray-for-neurophysiology/image3.png -- 1,028.21kb -> 655.90kb (36.21%)
/public/posts/dask-detrending/output-array-new.png -- 102.45kb -> 66.88kb (34.72%)
/public/posts/dask-detrending/output-array-old.png -- 102.96kb -> 67.22kb (34.71%)
/public/projects/xmip.png -- 39.69kb -> 27.00kb (31.99%)
/public/posts/flexible-indexing/summary-slide.png -- 571.53kb -> 418.40kb (26.79%)
/public/posts/xarray-for-neurophysiology/image4.png -- 506.68kb -> 373.64kb (26.26%)
/public/posts/gpu-pipline/profiling_screenshot2.png -- 392.17kb -> 299.99kb (23.5%)
/public/posts/gpu-pipline/profiling_screenshot1.png -- 362.81kb -> 277.85kb (23.42%)
/public/posts/introducing-pint-xarray/squared_wind.png -- 121.52kb -> 94.11kb (22.56%)
/public/posts/gpu-pipline/all_in_all_improvement.png -- 111.07kb -> 92.15kb (17.03%)
/public/posts/xarray-for-neurophysiology/image2.png -- 1,870.57kb -> 1,596.14kb (14.67%)
/public/posts/flexible-indexing/xvecfig.png -- 72.52kb -> 63.02kb (13.1%)
/public/posts/gpu-pipline/scaling_chunking_performance_plot.png -- 112.91kb -> 98.16kb (13.06%)
/public/posts/xarray-for-neurophysiology/image5.png -- 78.51kb -> 68.60kb (12.63%)
/public/posts/season-grouping/four-month-seasons.png -- 113.56kb -> 99.42kb (12.45%)
/public/posts/tutorial/tutorial-before-after.png -- 474.73kb -> 422.01kb (11.11%)
/public/posts/introducing-xradar/odim_polar_scan.png -- 66.91kb -> 62.10kb (7.18%)

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