chore: Remove unused dependencies

pubspec.lock

@@ -520,7 +520,7 @@ packages:
     source: hosted
     version: "1.0.2"
   http:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: http
       url: "https://pub.dartlang.org"
@@ -828,14 +828,14 @@ packages:
       name: permission_handler
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "5.0.1+1"
+    version: "5.1.0+2"
   permission_handler_platform_interface:
     dependency: transitive
     description:
       name: permission_handler_platform_interface
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "2.0.1"
+    version: "2.0.2"
   petitparser:
     dependency: transitive
     description:
@@ -900,7 +900,7 @@ packages:
     source: hosted
     version: "2.1.3"
   random_string:
-    dependency: "direct main"
+    dependency: transitive
     description:
       name: random_string
       url: "https://pub.dartlang.org"

pubspec.yaml

@@ -43,7 +43,6 @@ dependencies:
   permission_handler: ^5.0.1+1
   share: ^0.6.5+4
   flutter_secure_storage: ^3.3.5
-  http: ^0.12.2
   universal_html: ^1.2.4
   receive_sharing_intent: ^1.4.3
   flutter_slidable: ^0.5.7
@@ -58,7 +57,6 @@ dependencies:
   moor: ^3.4.0
   sqlite3: ^0.1.8
   sqflite: ^1.3.2+2 # Still used to obtain the database location
-  random_string: ^2.1.0
   flutter_typeahead: ^2.0.0
   flutter_olm: ^1.1.1
   intl: any