Increase version to v1.11.1

## Fixes
- Fix PWA install button on chromium based browsers (#383) (Thanks @realchrislovett)
- Fix wrong file extension on chromium based browsers if mime type is not set (#355)

## Languages
- Translations updates from Hosted Weblate (Japanese)

public/index.html

@@ -668,7 +668,7 @@
             </svg>
             <div class="title-wrapper" dir="ltr">
                 <h1>PairDrop</h1>
-                <div class="font-subheading">v1.11.0</div>
+                <div class="font-subheading">v1.11.1</div>
             </div>
             <div class="font-subheading" data-i18n-key="about.claim" data-i18n-attrs="text"></div>
             <div class="row">

public/service-worker.js

@@ -1,4 +1,4 @@
-const cacheVersion = 'v1.11.0';
+const cacheVersion = 'v1.11.1';
 const cacheTitle = `pairdrop-cache-${cacheVersion}`;
 const forceFetch = false; // FOR DEVELOPMENT: Set to true to always update assets instead of using cached versions
 const relativePathsToCache = [