fix: check desktop version only once (#441)

src/layout/Dashboard.tsx

@@ -1,6 +1,6 @@
 import { Button, CircularProgress, Container, IconButton } from '@material-ui/core'
 import { createStyles, makeStyles, Theme } from '@material-ui/core/styles'
-import React, { ReactElement, useContext } from 'react'
+import React, { ReactElement, useContext, useEffect } from 'react'
 import { useSnackbar } from 'notistack'
 import CloseIcon from 'remixicon-react/CloseCircleLineIcon'
 import ErrorBoundary from '../components/ErrorBoundary'
@@ -33,33 +33,35 @@ const Dashboard = (props: Props): ReactElement => {
   const { newBeeDesktopVersion } = useNewBeeDesktopVersion(isBeeDesktop)
   const { enqueueSnackbar, closeSnackbar } = useSnackbar()
 
-  if (newBeeDesktopVersion !== '') {
-    enqueueSnackbar(`There is new Swarm Dashboard version ${newBeeDesktopVersion}!`, {
-      variant: 'warning',
-      preventDuplicate: true,
-      key: 'desktopNewVersion',
-      persist: true,
-      action: key => (
-        <React.Fragment>
-          <Button
-            onClick={() => {
-              window.open(BEE_DESKTOP_LATEST_RELEASE_PAGE)
-              closeSnackbar(key)
-            }}
-          >
-            Download release
-          </Button>
-          <IconButton
-            onClick={() => {
-              closeSnackbar(key)
-            }}
-          >
-            <CloseIcon />
-          </IconButton>
-        </React.Fragment>
-      ),
-    })
-  }
+  useEffect(() => {
+    if (newBeeDesktopVersion !== '') {
+      enqueueSnackbar(`There is new Swarm Dashboard version ${newBeeDesktopVersion}!`, {
+        variant: 'warning',
+        preventDuplicate: true,
+        key: 'desktopNewVersion',
+        persist: true,
+        action: key => (
+          <React.Fragment>
+            <Button
+              onClick={() => {
+                window.open(BEE_DESKTOP_LATEST_RELEASE_PAGE)
+                closeSnackbar(key)
+              }}
+            >
+              Download release
+            </Button>
+            <IconButton
+              onClick={() => {
+                closeSnackbar(key)
+              }}
+            >
+              <CloseIcon />
+            </IconButton>
+          </React.Fragment>
+        ),
+      })
+    }
+  }, [enqueueSnackbar, closeSnackbar, newBeeDesktopVersion])
 
   const content = (
     <>