Update dependency element-hq/compound-design-tokens to v6.8.0 (#4959)

* Update dependency element-hq/compound-design-tokens to v6.8.0

* Update the Package.resolved files.

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Doug <douglase@element.io>

compound-ios/Inspector/Inspector.xcworkspace/xcshareddata/swiftpm/Package.resolved

@@ -5,8 +5,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/element-hq/compound-design-tokens.git",
       "state" : {
-        "revision" : "18a711e61c6ac3413a5c1a7597c3647ccf6295c6",
-        "version" : "6.6.0"
+        "revision" : "9986a71f303de26b637f6e723cd7f83fabcb471a",
+        "version" : "6.8.0"
       }
     },
     {
@@ -32,8 +32,8 @@
       "kind" : "remoteSourceControl",
       "location" : "https://github.com/pointfreeco/swift-snapshot-testing",
       "state" : {
-        "revision" : "1be8144023c367c5de701a6313ed29a3a10bf59b",
-        "version" : "1.18.3"
+        "revision" : "a8b7c5e0ed33d8ab8887d1654d9b59f2cbad529b",
+        "version" : "1.18.7"
       }
     },
     {