Bump tecnickcom/tcpdf from 6.6.5 to 6.7.3

Bumps [tecnickcom/tcpdf](https://github.com/tecnickcom/TCPDF) from 6.6.5 to 6.7.3.
- [Changelog](https://github.com/tecnickcom/TCPDF/blob/main/CHANGELOG.TXT)
- [Commits](https://github.com/tecnickcom/TCPDF/compare/6.6.5...6.7.3)

---
updated-dependencies:
- dependency-name: tecnickcom/tcpdf
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

composer.lock

@@ -14454,20 +14454,20 @@
         },
         {
             "name": "tecnickcom/tcpdf",
-            "version": "6.6.5",
+            "version": "6.7.3",
             "source": {
                 "type": "git",
                 "url": "https://github.com/tecnickcom/TCPDF.git",
-                "reference": "5fce932fcee4371865314ab7f6c0d85423c5c7ce"
+                "reference": "8389cec2c34926bb87e87736265f077ad822adeb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/tecnickcom/TCPDF/zipball/5fce932fcee4371865314ab7f6c0d85423c5c7ce",
-                "reference": "5fce932fcee4371865314ab7f6c0d85423c5c7ce",
+                "url": "https://api.github.com/repos/tecnickcom/TCPDF/zipball/8389cec2c34926bb87e87736265f077ad822adeb",
+                "reference": "8389cec2c34926bb87e87736265f077ad822adeb",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "php": ">=5.5.0"
             },
             "type": "library",
             "autoload": {
@@ -14514,7 +14514,7 @@
             ],
             "support": {
                 "issues": "https://github.com/tecnickcom/TCPDF/issues",
-                "source": "https://github.com/tecnickcom/TCPDF/tree/6.6.5"
+                "source": "https://github.com/tecnickcom/TCPDF/tree/6.7.3"
             },
             "funding": [
                 {
@@ -14522,7 +14522,7 @@
                     "type": "custom"
                 }
             ],
-            "time": "2023-09-06T15:09:26+00:00"
+            "time": "2024-03-20T16:19:35+00:00"
         },
         {
             "name": "thecodingmachine/safe",