Release 5.3.0 · tesseract-ocr/tesseract

This is a new minor version of Tesseract 5.

What's Changed

Fix memory issues in ScrollView::MessageReceiver by @p12tic in #3872
autotools: Add rule for svpaint executable by @stweil in #3873
Replace call of exit function by return statement in main function by @stweil in #3878
Fix the build on CodeQL/Analyze by @arseniy-sonar in #3888
CI: Remove Ubuntu 18.04 by @amitdo in #3902
configure.ac: fix build on aarch64_be by @ffontaine in #3907
SW CI: Add paths filter by @amitdo in #3908
Create .mailmap by @amitdo in #3910
Fix tesseract.pc from cmake to match autotools by @jeroen in #3930
Update README.md by @nicholasz2510 in #3935
Fixed 2 errors by @Gitoffthelawn in #3938
fix issue #3940 - remove colormap before thresholding by @zdenop in #3942
Update upload-artifact action by @rettinghaus in #3949
Update checkout action to version 3 by @rettinghaus in #3948
Fix Markdownlint by @Saibamen in #3950
Fix broken links in CONTRIBUTING.md by @doraeric in #3951
pdfrenderer.cpp: Ignore non-text blocks by @amitdo in #3959
lstm.train: allow .box from .raw.png too by @bertsky in #3962
Fix a number of performance issues (reported by Coverity Scan) by @stweil in #3967
Fix training tools for legacy engine (issue #3925) by @stweil in #3970
Fix function tesseract::WriteFeature (issue #3925) by @stweil in #3972
Modernize function ObjectCache::DeleteUnusedObjects (fix issue with s… by @stweil in #3978
More fixes for issue #3925 by @stweil in #3977

Full Changelog: 5.2.0...5.3.0