Don't highlight text bubble when long pressing adjacent to text bubble (#1281)

Previously, if you tapped in the white space adjacent to the text bubble,
the bubble would highlight. No menu was show or interaction made
available. This is confusing.

It was fixed upstream, so this was as simple as:

    pod update JSQMessagesViewController

// FREEBIE

Podfile.lock

@@ -30,7 +30,7 @@ PODS:
   - DJWActionSheet (1.0.4)
   - FFCircularProgressView (0.5)
   - HKDFKit (0.0.3)
-  - JSQMessagesViewController (7.3.3):
+  - JSQMessagesViewController (7.3.4):
     - JSQSystemSoundPlayer (~> 2.0.1)
   - JSQSystemSoundPlayer (2.0.1)
   - libPhoneNumber-iOS (0.8.14)
@@ -144,7 +144,7 @@ SPEC CHECKSUMS:
   DJWActionSheet: 2fe54b1298a7f0fe44462233752c76a530e0cd80
   FFCircularProgressView: 683a4ab1e1bd613246a3dffa61503ffdebcde8d8
   HKDFKit: c058305d6f64b84f28c50bd7aa89574625bcb62a
-  JSQMessagesViewController: 0ee3f80237268192a3e8337fd0d787f1a1bf5a7a
+  JSQMessagesViewController: 39fed975e3c9f8eba7292071e29eeb541d105e66
   JSQSystemSoundPlayer: c5850e77a4363ffd374cd851154b9af93264ed8d
   libPhoneNumber-iOS: fb165271ebe7fb32e55da97b83219382f2f9d409
   Mantle: bc40bb061d8c2c6fb48d5083e04d928c3b7f73d9