Upgrade typescript dependency version

[Kit-p]

Fix typegen incorrectly outputs const for non-readonly fields.

Closes #361

[xenova]

Great! Thanks so much! btw, do you have any links to typescript changelogs where they mention this bugfix?

[Kit-p]

@xenova I am not familiar with the typescript repo, can only confirm this is fixed in >=5.1.0.

With some investigations, I believe it was a magical side-effect of this PR, just a guess though.

[Kit-p]

@xenova just noticed there is a second bug (globalThis has no index signature) in #361, I am not sure if this solves that as well.

Let me get back to you later.

[Kit-p]

@xenova The globalThis problem is not related to this project, for details please refer to my comment on the issue.

This PR should be ready.

[xenova]

I can confirm that this does mark env vars as non-constant (and should fix #361):

5.0.2: types/env.d.ts

export namespace env {
    export namespace backends {
        export { onnx_env as onnx };
        export const tfjs: {};
    }
    export { __dirname };
    export { VERSION as version };
    export const allowRemoteModels: boolean;
    export const remoteHost: string;
    export const remotePathTemplate: string;
    export const allowLocalModels: boolean;
    export { localModelPath };
    export { FS_AVAILABLE as useFS };
    export { WEB_CACHE_AVAILABLE as useBrowserCache };
    export { FS_AVAILABLE as useFSCache };
    export { DEFAULT_CACHE_DIR as cacheDir };
    export const useCustomCache: boolean;
    export const customCache: any;
}
declare const onnx_env: any;
declare const __dirname: any;
declare const VERSION: "2.7.0";
declare const localModelPath: any;
declare const FS_AVAILABLE: boolean;
declare const WEB_CACHE_AVAILABLE: boolean;
declare const DEFAULT_CACHE_DIR: any;
export {};

5.2.2: types/env.d.ts

export namespace env {
    export namespace backends {
        export { onnx_env as onnx };
        export let tfjs: {};
    }
    export { __dirname };
    export { VERSION as version };
    export let allowRemoteModels: boolean;
    export let remoteHost: string;
    export let remotePathTemplate: string;
    export let allowLocalModels: boolean;
    export { localModelPath };
    export { FS_AVAILABLE as useFS };
    export { WEB_CACHE_AVAILABLE as useBrowserCache };
    export { FS_AVAILABLE as useFSCache };
    export { DEFAULT_CACHE_DIR as cacheDir };
    export let useCustomCache: boolean;
    export let customCache: any;
}
declare const onnx_env: any;
declare const __dirname: any;
declare const VERSION: "2.7.0";
declare const localModelPath: any;
declare const FS_AVAILABLE: boolean;
declare const WEB_CACHE_AVAILABLE: boolean;
declare const DEFAULT_CACHE_DIR: any;
export {};

(notice difference between let and const)