Bump matrix-js-sdk from 18.1.0 to 19.2.0 (#711)

* Bump matrix-js-sdk from 18.1.0 to 19.2.0

Bumps [matrix-js-sdk](https://github.com/matrix-org/matrix-js-sdk) from 18.1.0 to 19.2.0.
- [Release notes](https://github.com/matrix-org/matrix-js-sdk/releases)
- [Changelog](https://github.com/matrix-org/matrix-js-sdk/blob/develop/CHANGELOG.md)
- [Commits](https://github.com/matrix-org/matrix-js-sdk/compare/v18.1.0...v19.2.0)

---
updated-dependencies:
- dependency-name: matrix-js-sdk
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

* Remove session store

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Ajay Bura <32841439+ajbura@users.noreply.github.com>

src/client/initMatrix.js

@@ -33,7 +33,6 @@ class InitMatrix extends EventEmitter {
       accessToken: secret.accessToken,
       userId: secret.userId,
       store: indexedDBStore,
-      sessionStore: new sdk.WebStorageSessionStore(global.localStorage),
       cryptoStore: new sdk.IndexedDBCryptoStore(global.indexedDB, 'crypto-store'),
       deviceId: secret.deviceId,
       timelineSupport: true,