Bump Web Component version to 5.7.4

[tomivirkki]

No description provided.

[vaadin-bot]

SonarQube analysis reported 32 issues

• 2 critical
• 8 major
• 19 minor
• 3 info

Top 10 extra issues

Note: The following issues were found on lines that were not modified in the pull request. Because these issues can't be reported as line comments, they are summarized here:

1. Grid.java#L2358: Remove usage of generic wildcard type.
2. Grid.java#L3110: Define a constant instead of duplicating this literal "direction" 4 times.
3. Grid.java#: This file has 1,767 lines, which is greater than 750 authorized. Split it into smaller files.
4. Grid.java#L1894: Call "Optional#isPresent()" before accessing the value.
5. Grid.java#L1895: Either log or rethrow this exception.
6. Grid.java#L1914: Either log or rethrow this exception.
7. Grid.java#L2923: Call "Optional#isPresent()" before accessing the value.
8. Grid.java#L2933: Call "Optional#isPresent()" before accessing the value.
9. Grid.java#L3632: Rename "editor" which hides the field declared at line 1164.
10. Grid.java#L4043: Remove this unused method parameter "event".