chore: don't use postinstall script

Author: Minishlink

.github/actions/setup/action.yml

@@ -29,9 +29,8 @@ runs:
       run: yarn install --immutable
       shell: bash
 
-    - name: Run postinstall
-      if: steps.yarn-cache.outputs.cache-hit == 'true'
-      run: yarn postinstall
+    - name: Run yarn genversion
+      run: yarn genversion
       shell: bash
 
     - name: Cache dependencies

package.json

@@ -27,7 +27,6 @@
   },
   "scripts": {
     "genversion": "genversion src/internals/version.ts --esm -s",
-    "postinstall": "yarn genversion",
     "prepare": "yarn genversion && typedoc && bob build",
     "clean": "shx rm -rf bin",
     "prebuild:tests": "yarn clean",