Security: Update composer/ca-bundle to version 1.6.0.

This applies the last 5 updates to the `composer/ca-bundle` to the bundled certificate file in the 7.0 branch.

Reviewed by desrosj.
Merges r62393, r62929, r64671 to the 7.0 branch.

Props westonruter, peterwilsoncc.
See #64245, #64969, #66355.



git-svn-id: https://develop.svn.wordpress.org/branches/7.0@64703 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

composer.json

@@ -19,7 +19,7 @@
 		"ext-dom": "*"
 	},
 	"require-dev": {
-		"composer/ca-bundle": "1.5.11",
+		"composer/ca-bundle": "1.6.0",
 		"squizlabs/php_codesniffer": "3.13.5",
 		"wp-coding-standards/wpcs": "~3.3.0",
 		"phpcompatibility/phpcompatibility-wp": "~2.1.3",