Update infection/infection requirement from ^0.15.3 to ^0.17.5

Created by: dependabot[bot]

Updates the requirements on infection/infection to permit the latest version.

Release notes

Sourced from infection/infection's releases.

Replace non UTF-8 characters before json_encode to avoid failure in JsonLogger

Fixed:

• Replace non utf-8 characters before json_encode'ing to avoid failure in JsonLogger #1320

Commits

• 14ff257 Replace non utf-8 characters before json_encode'ing to avoid failure in Jso...
• a519360 Conflict with PHPUnit 9.3+ (#1319)
• d3d77a7 TestLocator returns non-unique tests, but Mutation didn't know that (#1310)
• 31e4af4 Infection must return appropriate exit status when failing (#1299)
• 9488dfd Do not mutate openssl_free_key() (#1298)
• 201c8ea Update changelog for 0.17.0
• 1e18fd7 Update GPG private key as the old one expired
• 1ac7637 Porting sanmai's commit from 0.16 to master
• e1beb5c Upgrade infection/include-interceptor to ^0.2.4 (#1288)
• dd1d8ae Update dependencies in prep for 0.17 (#1287)
• Additional commits viewable in compare view

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