Bump assets/syntaxes/02_Extra/Lean from `7e99440` to `49d1853`

Bumps [assets/syntaxes/02_Extra/Lean](https://github.com/leanprover/vscode-lean) from `7e99440` to `49d1853`.
- [Release notes](https://github.com/leanprover/vscode-lean/releases)
- [Commits](7e99440b33...49d185361a)

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

assets/syntaxes/02_Extra/Lean

@@ -1 +1 @@
-Subproject commit 7e99440b33c834b11deda67144a6a7ce5a666f0e
+Subproject commit 49d185361a9943f440d8efe389259a3374ade905