Fix TS issues in `writeGitVersion` #943

Job	Run time
Build and Test on Node 20.x	42s
Test Published Artifact cra4	1m 37s
Test Published Artifact cra5	1m 20s
Check package config with are-the-types-wrong (20.x)	12s
Test Published Artifact next	1m 2s
Test Types with TypeScript 4.7	38s
Test Published Artifact vite	55s
Test Types with TypeScript 4.8	37s
Test Published Artifact node-standard	21s
Test Types with TypeScript 4.9	38s
Test Published Artifact node-esm	16s
Test Published Artifact react-native	1m 20s
Test Types with TypeScript 5.0	33s
Test Published Artifact expo	1m 8s
Test Types with TypeScript 5.1	36s
Test Types with TypeScript 5.2	33s
Test Types with TypeScript 5.3	35s
Test Types with TypeScript 5.4	32s
	13m 35s

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