Update ttypescript to 1.5.15 to fix a compile failure when using node >=16.18

[albertsj1]

Currently, cloning this repo, running npm install or even npm ci installs ttypescript 1.5.13. Using this version of ttypescript causes the npm run dev command to fail with the following error:

npm run dev

> [email protected] dev
> npx rollup --config rollup.config.js -w

[!] TypeError: Cannot set property constructor of [object Object] which has only a getter
TypeError: Cannot set property constructor of [object Object] which has only a getter
    at new __ (/Users/johnalb/src/personal/obsidian_dev/obsidian-dataview/node_modules/ttypescript/lib/loadTypescript.js:13:42)
    at __extends (/Users/johnalb/src/personal/obsidian_dev/obsidian-dataview/node_modules/ttypescript/lib/loadTypescript.js:14:84)
    at /Users/johnalb/src/personal/obsidian_dev/obsidian-dataview/node_modules/ttypescript/lib/loadTypescript.js:65:5
    at Object.<anonymous> (/Users/johnalb/src/personal/obsidian_dev/obsidian-dataview/node_modules/ttypescript/lib/loadTypescript.js:100:2)
    at Module._compile (node:internal/modules/cjs/loader:1233:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1287:10)
    at Object.require.extensions.<computed> [as .js] (/Users/johnalb/src/personal/obsidian_dev/obsidian-dataview/node_modules/rollup/dist/shared/loadConfigFile.js:617:17)
    at Module.load (node:internal/modules/cjs/loader:1091:32)
    at Function.Module._load (node:internal/modules/cjs/loader:938:12)
    at Module.require (node:internal/modules/cjs/loader:1115:19)

Updating to ttypescript 1.5.15 fixes this bug.

[lomky]

Could a maintainer please run the workflows on this PR? without this the main branch is broken so all other PRs will fail