Revert "chore(deps): Bumping electron dependency to 15.5.1 (#21072)"

This reverts commit 71a18e4.

Author: tbiethman

packages/desktop-gui/cypress/integration/settings_spec.js

@@ -447,7 +447,6 @@ describe('Settings', () => {
           cy.get('.settings-record-key')
           .contains(`cypress run --record --key ${this.keys[0].id}`)
 
-          cy.ensureAnimationsFinished()
           cy.percySnapshot()
         })
 

packages/electron/package.json

@@ -23,7 +23,7 @@
     "minimist": "1.2.6"
   },
   "devDependencies": {
-    "electron": "15.5.1",
+    "electron": "15.3.5",
     "electron-packager": "15.4.0",
     "execa": "4.1.0",
     "mocha": "3.5.3"

yarn.lock

@@ -18141,10 +18141,10 @@ electron-to-chromium@^1.3.247, electron-to-chromium@^1.3.378, electron-to-chromi
   resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.727.tgz#857e310ca00f0b75da4e1db6ff0e073cc4a91ddf"
   integrity sha512-Mfz4FIB4FSvEwBpDfdipRIrwd6uo8gUDoRDF4QEYb4h4tSuI3ov594OrjU6on042UlFHouIJpClDODGkPcBSbg==
 
-electron@15.5.1:
-  version "15.5.1"
-  resolved "https://registry.yarnpkg.com/electron/-/electron-15.5.1.tgz#6c2a7080dfbe4f8571098ce0dc230101b7e0c3f4"
-  integrity sha512-V3tOikVM7tGK4n5+MkLN+v73h0tndDeaQXy8kjkHj5NFIgQPwKD9S8XjQOBa+Cm5l3xbQrUsN5X6OmYS2WfPlg==
+electron@15.3.5:
+  version "15.3.5"
+  resolved "https://registry.yarnpkg.com/electron/-/electron-15.3.5.tgz#62fc7d2289d3f47e9e05c0aa9bb6d929a6faf398"
+  integrity sha512-z0/7+p3uZYBmjf7UEVBfcMTVgW6ThGgfI4jdbQ1TH4XOLYkj560/abv91/s8kK0MZ7JQg4KRP1JwQZ4q6+BPFw==
   dependencies:
     "@electron/get" "^1.13.0"
     "@types/node" "^14.6.2"