build(deps): bump signature from 6.0.0 to 6.3.0

Bumps [signature](https://github.com/4Q-s-r-o/signature) from 6.0.0 to 6.3.0.
- [Changelog](https://github.com/4Q-s-r-o/signature/blob/master/CHANGELOG.md)
- [Commits](https://github.com/4Q-s-r-o/signature/commits/6.3.0)

---
updated-dependencies:
- dependency-name: signature
  dependency-version: 6.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pubspec.lock

@@ -1,14 +1,6 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
-  archive:
-    dependency: transitive
-    description:
-      name: archive
-      sha256: "0c64e928dcbefddecd234205422bcfc2b5e6d31be0b86fef0d0dd48d7b4c9742"
-      url: "https://pub.dev"
-    source: hosted
-    version: "4.0.4"
   args:
     dependency: transitive
     description:
@@ -21,10 +13,10 @@ packages:
     dependency: transitive
     description:
       name: async
-      sha256: d2872f9c19731c2e5f10444b14686eb7cc85c76274bd6c16e1816bff9a3bab63
+      sha256: "758e6d74e971c3e5aceb4110bfd6698efc7f501675bcfe0c775459a8140750eb"
       url: "https://pub.dev"
     source: hosted
-    version: "2.12.0"
+    version: "2.13.0"
   boolean_selector:
     dependency: transitive
     description:
@@ -57,14 +49,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.19.1"
-  crypto:
-    dependency: transitive
-    description:
-      name: crypto
-      sha256: ff625774173754681d66daaf4a448684fb04b78f902da9cb3d308c19cc5e8bab
-      url: "https://pub.dev"
-    source: hosted
-    version: "3.0.3"
   dropdown_search:
     dependency: "direct main"
     description:
@@ -77,18 +61,10 @@ packages:
     dependency: transitive
     description:
       name: fake_async
-      sha256: "6a95e56b2449df2273fd8c45a662d6947ce1ebb7aafe80e550a3f68297f3cacc"
+      sha256: "5368f224a74523e8d2e7399ea1638b37aecfca824a3cc4dfdf77bf1fa905ac44"
       url: "https://pub.dev"
     source: hosted
-    version: "1.3.2"
-  ffi:
-    dependency: transitive
-    description:
-      name: ffi
-      sha256: "289279317b4b16eb2bb7e271abccd4bf84ec9bdcbe999e278a94b804f5630418"
-      url: "https://pub.dev"
-    source: hosted
-    version: "2.1.4"
+    version: "1.3.3"
   flutter:
     dependency: "direct main"
     description: flutter
@@ -178,10 +154,10 @@ packages:
     dependency: transitive
     description:
       name: flutter_svg
-      sha256: c200fd79c918a40c5cd50ea0877fa13f81bdaf6f0a5d3dbcc2a13e3285d6aa1b
+      sha256: d44bf546b13025ec7353091516f6881f1d4c633993cb109c3916c3a0159dadf1
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.17"
+    version: "2.1.0"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -216,14 +192,6 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.0.2"
-  image:
-    dependency: transitive
-    description:
-      name: image
-      sha256: "13d3349ace88f12f4a0d175eb5c12dcdd39d35c4c109a8a13dfeb6d0bd9e31c3"
-      url: "https://pub.dev"
-    source: hosted
-    version: "4.5.3"
   intl:
     dependency: "direct main"
     description:
@@ -236,10 +204,10 @@ packages:
     dependency: transitive
     description:
       name: leak_tracker
-      sha256: c35baad643ba394b40aac41080300150a4f08fd0fd6a10378f8f7c6bc161acec
+      sha256: "6bb818ecbdffe216e81182c2f0714a2e62b593f4a4f13098713ff1685dfb6ab0"
       url: "https://pub.dev"
     source: hosted
-    version: "10.0.8"
+    version: "10.0.9"
   leak_tracker_flutter_testing:
     dependency: transitive
     description:
@@ -352,22 +320,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.10.2+1"
-  posix:
-    dependency: transitive
-    description:
-      name: posix
-      sha256: a0117dc2167805aa9125b82eee515cc891819bac2f538c83646d355b16f58b9a
-      url: "https://pub.dev"
-    source: hosted
-    version: "6.0.1"
   signature:
     dependency: "direct main"
     description:
       name: signature
-      sha256: b6254a125b1a27ad3dd74df18b890c4a1795e7acd5e3f8b0162af2089927d318
+      sha256: f3d14bd6dae46d3b4802c6a091d6d39c9c6080d999e8c5380581d3725c30e360
       url: "https://pub.dev"
     source: hosted
-    version: "6.0.0"
+    version: "6.3.0"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -465,10 +425,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: "0968250880a6c5fe7edc067ed0a13d4bae1577fe2771dcf3010d52c4a9d3ca14"
+      sha256: ddfa8d30d89985b96407efce8acbdd124701f96741f2d981ca860662f1c0dc02
       url: "https://pub.dev"
     source: hosted
-    version: "14.3.1"
+    version: "15.0.0"
   web:
     dependency: transitive
     description: