Firefox Nightly supports Clear-Site-Data: cache (#25945)

* FF136 Clear-Site-Data-Cache

* Update http/headers/Clear-Site-Data.json

Co-authored-by: Florian Scholz <[email protected]>

---------

Co-authored-by: Claas Augner <[email protected]>
Co-authored-by: Florian Scholz <[email protected]>

Author: 3 people

http/headers/Clear-Site-Data.json

@@ -95,11 +95,16 @@
               "edge": {
                 "version_added": "≤79"
               },
-              "firefox": {
-                "version_added": "63",
-                "version_removed": "94",
-                "impl_url": "https://bugzil.la/1838506"
-              },
+              "firefox": [
+                {
+                  "version_added": "preview"
+                },
+                {
+                  "version_added": "63",
+                  "version_removed": "94",
+                  "impl_url": "https://bugzil.la/1838506"
+                }
+              ],
               "firefox_android": "mirror",
               "ie": {
                 "version_added": false