[MEDIUM] CVE-2021-41270: Prevent CSV Injection via formulas

PKSA-s1hc-69wj-fhpp CVE-2021-41270 GHSA-2xhg-w2g5-w95x

Affected package: symfony/serializer

Affected version: >=4.1.0,<4.2.0|>=4.2.0,<4.3.0|>=4.3.0,<4.4.0|>=4.4.0,<4.4.35|>=5.0.0,<5.1.0|>=5.1.0,<5.2.0|>=5.2.0,<5.3.0|>=5.3.0,<5.3.12

Reported by:
GitHub, FriendsOfPHP/security-advisories