Bump phpmailer/phpmailer from 6.1.6 to 6.1.7 (#990)

Bumps [phpmailer/phpmailer](https://github.com/PHPMailer/PHPMailer) from 6.1.6 to 6.1.7.
- [Release notes](https://github.com/PHPMailer/PHPMailer/releases)
- [Changelog](https://github.com/PHPMailer/PHPMailer/blob/master/changelog.md)
- [Commits](https://github.com/PHPMailer/PHPMailer/compare/v6.1.6...v6.1.7)

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

composer.lock

@@ -160,16 +160,16 @@
         },
         {
             "name": "phpmailer/phpmailer",
-            "version": "v6.1.6",
+            "version": "v6.1.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/PHPMailer/PHPMailer.git",
-                "reference": "c2796cb1cb99d7717290b48c4e6f32cb6c60b7b3"
+                "reference": "2c2370ba3df7034f9eb7b8f387c97b52b2ba5ad0"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/c2796cb1cb99d7717290b48c4e6f32cb6c60b7b3",
-                "reference": "c2796cb1cb99d7717290b48c4e6f32cb6c60b7b3",
+                "url": "https://api.github.com/repos/PHPMailer/PHPMailer/zipball/2c2370ba3df7034f9eb7b8f387c97b52b2ba5ad0",
+                "reference": "2c2370ba3df7034f9eb7b8f387c97b52b2ba5ad0",
                 "shasum": ""
             },
             "require": {
@@ -224,7 +224,7 @@
                     "type": "github"
                 }
             ],
-            "time": "2020-05-27T12:24:03+00:00"
+            "time": "2020-07-14T18:50:27+00:00"
         },
         {
             "name": "psr/container",