[Security] Bump symfony/form from 4.1.2 to 4.1.12

[dependabot-preview]

Bumps symfony/form from 4.1.2 to 4.1.12. This update includes security fixes.

Vulnerabilities fixed

Sourced from The PHP Security Advisories Database.

CVE-2018-19789: Temporary uploaded file path disclosure

Affected versions: >=2.7.38, <2.7.50; >=2.8.0, <2.8.49; >=3.0.0, <3.1.0; >=3.1.0, <3.2.0; >=3.2.0, <3.3.0; >=3.3.0, <3.4.0; >=3.4.0, <3.4.20; >=4.0.0, <4.0.15; >=4.1.0, <4.1.9; >=4.2.0, <4.2.1

Sourced from The PHP Security Advisories Database.

CVE-2018-19789: Temporary uploaded file path disclosure

Affected versions: >=2.7.38, <2.7.50; >=2.8.0, <2.8.49; >=3.0.0, <3.1.0; >=3.1.0, <3.2.0; >=3.2.0, <3.3.0; >=3.3.0, <3.4.0; >=3.4.0, <3.4.19; >=4.0.0, <4.0.15; >=4.1.0, <4.1.9; >=4.2.0, <4.2.1

Commits

• 4bcc0f2 Merge branch '3.4' into 4.1
• 671f1a0 Remove gendered pronouns
• 7f793d9 Merge branch '3.4' into 4.1
• f762833 bug #29926 [Form] Changed UrlType input type to text when default_protocol is...
• 872488d [Form] ensure compatibility with older PHPUnit mocks
• 03bab85 Merge branch '3.4' into 4.1
• b24a67f synchronise the form builder docblock
• 40b58be [Form] Changed UrlType input type to text when default_protocol is not null
• 9b97370 fixed CS
• 051c529 Merge branch '3.4' into 4.1
• Additional commits viewable in compare view

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