tesseract: updated to 5.3.0

5.3.0

Fix memory issues in ScrollView::MessageReceiver
autotools: Add rule for svpaint executable
Replace call of exit function by return statement in main function
Fix the build on CodeQL/Analyze
CI: Remove Ubuntu 18.04
configure.ac: fix build on aarch64_be
SW CI: Add paths filter
Create .mailmap
Fix tesseract.pc from cmake to match autotools
Update README.md
Fixed 2 errors
fix issue 3940 - remove colormap before thresholding
Update upload-artifact action
Update checkout action to version 3
Fix Markdownlint
Fix broken links in CONTRIBUTING.md
pdfrenderer.cpp: Ignore non-text blocks
lstm.train: allow .box from .raw.png too
Fix a number of performance issues
Fix training tools for legacy engine
Fix function tesseract::WriteFeature
Modernize function ObjectCache::DeleteUnusedObjects
More fixes for issue

(adam)