chore(deps-dev): bump @dfinity/agent from 0.10.2 to 0.10.3

Bumps [@dfinity/agent](https://sdk.dfinity.org/docs/index.html) from 0.10.2 to 0.10.3.

---
updated-dependencies:
- dependency-name: "@dfinity/agent"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package.json

@@ -44,7 +44,7 @@
     "react-dom": ">=16.8.1"
   },
   "devDependencies": {
-    "@dfinity/agent": "0.10.2",
+    "@dfinity/agent": "0.10.3",
     "@dfinity/auth-client": "0.10.2",
     "@dfinity/authentication": "0.10.2",
     "@dfinity/candid": "0.10.3",

yarn.lock

@@ -1117,9 +1117,9 @@
   version "10.1.0"
   resolved "https://registry.npmjs.org/@csstools/normalize.css/-/normalize.css-10.1.0.tgz"
 
-"@dfinity/agent@0.10.2":
-  version "0.10.2"
-  resolved "https://registry.npmjs.org/@dfinity/agent/-/agent-0.10.2.tgz"
+"@dfinity/agent@0.10.3":
+  version "0.10.3"
+  resolved "https://registry.yarnpkg.com/@dfinity/agent/-/agent-0.10.3.tgz#488939eb5bc1562b37705efe5f7c6caa7b82513d"
   dependencies:
     base64-arraybuffer "^0.2.0"
     bignumber.js "^9.0.0"