disable some conflicting keybindings in diffview

lua/plugins/diffview.lua

@@ -3,7 +3,19 @@ return {
   dependencies = {
     'nvim-lua/plenary.nvim'
   },
-  config = true,
+  opts = {
+    keymaps = {
+      view = {
+        ['<leader>b'] = false
+      },
+      file_panel = {
+        ['<leader>b'] = false
+      },
+      file_history_panel = {
+        ['<leader>b'] = false
+      },
+    }
+  },
   cmd = 'DiffviewOpen',
   keys = {
     {