Upgrade sass-embedded

Netlify is struggling to install `sass-embedded`, so I'm upgrading it to
the latest version to see if it has any more luck

Gemfile.lock

@@ -16,6 +16,7 @@ GEM
       console (~> 1.10)
       io-event (~> 1.1)
       timers (~> 4.1)
+    bigdecimal (3.1.8)
     colorator (1.1.0)
     concurrent-ruby (1.2.2)
     console (1.16.2)
@@ -29,7 +30,12 @@ GEM
     ffi (1.15.5)
     fiber-local (1.0.0)
     forwardable-extended (2.6.0)
-    google-protobuf (3.21.12)
+    google-protobuf (4.27.0)
+      bigdecimal
+      rake (>= 13)
+    google-protobuf (4.27.0-arm64-darwin)
+      bigdecimal
+      rake (>= 13)
     hashery (2.1.2)
     html-proofer (5.0.9)
       addressable (~> 2.3)
@@ -96,7 +102,7 @@ GEM
     public_suffix (5.0.5)
     racc (1.7.3)
     rainbow (3.1.1)
-    rake (13.0.6)
+    rake (13.2.1)
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
@@ -105,11 +111,11 @@ GEM
     rouge (4.0.1)
     ruby-rc4 (0.1.5)
     safe_yaml (1.0.5)
-    sass-embedded (1.58.3)
-      google-protobuf (~> 3.21)
-      rake (>= 10.0.0)
-    sass-embedded (1.58.3-arm64-darwin)
-      google-protobuf (~> 3.21)
+    sass-embedded (1.77.2)
+      google-protobuf (>= 3.25, < 5.0)
+      rake (>= 13.0.0)
+    sass-embedded (1.77.2-arm64-darwin)
+      google-protobuf (>= 3.25, < 5.0)
     strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)