Sharedown 5.3.1

• Disable CSP to workaround puppeteer errors ( fixes #70 )
• Update all dependancies

sha256sum

483061c95f7046190c9ce87be19e0b128e15bee2bb2c145a4db9c853b40a1cc7  sharedown-5.3.1-arm64.dmg
9261bb2d98dfac8eb6001f28a9055b6bbe8b0e4cc0b8dfeeeb3df85802152bef  sharedown-5.3.1.dmg
87797b26e62255feebf5a032578e6e6f14e36b84c2053387356387d601e8640e  sharedown-5.3.1-win.zip
b5bd9db52af715c6eb6141d938c1e8b3cce445cbfa7d8c8413b046e934e6763f  sharedown Setup 5.3.1.exe
93bac35996501a6f6bb76d3d8de870714ca7840d3b7a492df824e3afd6c42586  sharedown-5.3.1.AppImage