[Backport release-3_40] CI: upgrade to ubuntu 24.04

[qgis-bot]

Backport #59797
Authored by: @t0b3

[github-actions]

🪟 Windows builds

Download Windows builds of this PR for testing.
Debug symbols for this build are available here.
(Built from commit ffd1cb6)

🪟 Windows Qt6 builds

Download Windows Qt6 builds of this PR for testing.
(Built from commit ffd1cb6)

[github-actions]

Tests failed for Qt 5

One or more tests failed using the build from commit ffd1cb6

text_html_mixed_metric_formatting

text_html_mixed_metric_formatting

Test failed at testHtmlMixedMetricFormatting at tests/src/python/test_qgstextrenderer.py:5582

• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting/variant1/text_html_mixed_metric_formatting.png (found 830 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting/variant2/text_html_mixed_metric_formatting.png (found 389 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting/variant3/text_html_mixed_metric_formatting.png (found 35 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting/variant4/text_html_mixed_metric_formatting.png (found 420 pixels different)

text_html_mixed_metric_formatting_buffer

text_html_mixed_metric_formatting_buffer

Test failed at testHtmlMixedMetricFormattingBuffer at tests/src/python/test_qgstextrenderer.py:5624

• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_buffer/variant1/text_html_mixed_metric_formatting_buffer.png (found 2268 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_buffer/variant2/text_html_mixed_metric_formatting_buffer.png (found 796 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_buffer/variant3/text_html_mixed_metric_formatting_buffer.png (found 38 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_buffer/variant4/text_html_mixed_metric_formatting_buffer.png (found 1546 pixels different)

text_html_mixed_metric_formatting_buffer_shadow

text_html_mixed_metric_formatting_buffer_shadow

Test failed at testHtmlMixedMetricFormattingBufferShadow at tests/src/python/test_qgstextrenderer.py:5673

• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_buffer_shadow/variant1/text_html_mixed_metric_formatting_buffer_shadow.png (found 2328 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_buffer_shadow/variant2/text_html_mixed_metric_formatting_buffer_shadow.png (found 794 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_buffer_shadow/variant3/text_html_mixed_metric_formatting_buffer_shadow.png (found 39 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_buffer_shadow/variant4/text_html_mixed_metric_formatting_buffer_shadow.png (found 1606 pixels different)

text_html_mixed_metric_formatting_shadow

text_html_mixed_metric_formatting_shadow

Test failed at testHtmlMixedMetricFormattingShadow at tests/src/python/test_qgstextrenderer.py:5647

• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_shadow/variant1/text_html_mixed_metric_formatting_shadow.png (found 1832 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_shadow/variant2/text_html_mixed_metric_formatting_shadow.png (found 736 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_shadow/variant3/text_html_mixed_metric_formatting_shadow.png (found 73 pixels different)

text_html_mixed_metric_formatting_line_height

text_html_mixed_metric_formatting_line_height

Test failed at testHtmlMixedMetricLineHeight at tests/src/python/test_qgstextrenderer.py:5602

• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_line_height/variant1/text_html_mixed_metric_formatting_line_height.png (found 853 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_line_height/variant2/text_html_mixed_metric_formatting_line_height.png (found 292 pixels different)
• Rendered image did not match tests/testdata/control_images/text_renderer/text_html_mixed_metric_formatting_line_height/variant3/text_html_mixed_metric_formatting_line_height.png (found 22 pixels different)

The full test report (included comparison of rendered vs expected images) can be found here.

Further documentation on the QGIS test infrastructure can be found in the Developer's Guide.