Merge pull request #1299 from weierophinney/fix/psr-7-errata-php-req

Update minimum PHP version for PSR-7 meta section 7.2

Author: Jean85

accepted/PSR-7-http-message-meta.md

@@ -699,12 +699,12 @@ This structure leverages PHP 7.2 covariance support to allow for a gradual upgra
 Implementers MAY add return types to their own packages at their discretion, provided that:
 
 * the return types match those in the 2.0 package.
-* the implementation specifies a minimum PHP version of 8.0.0 or later.
+* the implementation specifies a minimum PHP version of 7.2.0 or later.
 
 Implementers MAY add parameter types to their own packages in a new major release, either at the same time as adding return types or in a subsequent release, provided that:
 
 * the parameter types match those in the 1.1 package.
-* the implementation specifies a minimum PHP version of 8.0.0 or later.
+* the implementation specifies a minimum PHP version of 7.2.0 or later.
 * the implementation depends on `"psr/http-message": "^1.1 || ^2.0"` so as to exclude the untyped 1.0 version.
 
 Implementers are encouraged but not required to transition their packages toward the 2.0 version of the package at their earliest convenience.