fix: more plugin pinning update

- pin bufferline to v2.1.0
- add pin for nvim-web-devicons

neovim/lua/plugins.lua

@@ -23,9 +23,14 @@ return require("packer").startup(function(use)
     run    = ":TSUpdate",
   }
 
+  use {
+    "kyazdani42/nvim-web-devicons",
+    commit = "cde67b5d5427daeecfd7c77cf02ded23a26980bb", -- 2022-05-14
+  }
+
   use {
     "akinsho/bufferline.nvim",
-    commit = "374ef05019bf4708e12cd20a135b4766cf0cf9a5", -- 2022-05-14
+    tag      = "v2.1.0",
     requires = "kyazdani42/nvim-web-devicons",
     config   = require("config.bufferline"),
   }