fix: minify proto JSON files (googleapis#1771)

* fix: minify proto JSON files

* fix: minify only in build/ folder

Author: alexander-fenster

package.json

@@ -43,7 +43,7 @@
     "lint": "gts check",
     "clean": "gts clean",
     "compile": "tsc -p .",
-    "postcompile": "node scripts/init-directories.js && cp -r dev/protos build && cp dev/src/v1beta1/*.json build/src/v1beta1/ && cp dev/src/v1/*.json build/src/v1/ && cp dev/conformance/test-definition.proto build/conformance && cp dev/conformance/conformance-tests/*.json build/conformance/conformance-tests",
+    "postcompile": "node scripts/init-directories.js && cp -r dev/protos build && cp dev/src/v1beta1/*.json build/src/v1beta1/ && cp dev/src/v1/*.json build/src/v1/ && cp dev/conformance/test-definition.proto build/conformance && cp dev/conformance/conformance-tests/*.json build/conformance/conformance-tests && minifyProtoJson",
     "fix": "gts fix",
     "prepare": "npm run compile",
     "docs-test": "linkinator docs",
@@ -54,7 +54,7 @@
   "dependencies": {
     "fast-deep-equal": "^3.1.1",
     "functional-red-black-tree": "^1.0.1",
-    "google-gax": "^3.4.0",
+    "google-gax": "^3.5.1",
     "protobufjs": "^7.0.0"
   },
   "devDependencies": {