test(cmd-api-server): fix package.json needs an import assertion - json

Refactored the test cases so that they use the build-in file system libraries
of NodeJS to read the file contents of the dynamically pulled in package.json

The dynamic import with import type assertion cannot work because we do not
yet have the migration to ESM completed and therefore it won't compile
if you try to do it like it's supposed to be:

```typescript
const { default: data } = await import("./foo.json", { assert: { type: "json" } });
```

When running the test cases in question it would produce the failure pasted below:

```sh
not ok 3 TypeError [ERR_IMPORT_ASSERTION_TYPE_MISSING]: Module
"file:///home/runner/work/cacti/cacti/.tmp/test/test-cmd-api-server/
plugin-import-from-github_test/5c711023-7573-4272-aee9-c743f5346ce7/
fad4ca80-c93a-4611-9a68-207c9ad2085e/node_modules/@hyperledger/
cactus-dummy-package/package.json" needs an import assertion of type "json"
    ---
    operator: error
    at: bound call (/home/runner/work/cacti/cacti/node_modules/
    tape-promise/node_modules/onetime/index.js:30:12)
    stack: |-
        TypeError [ERR_IMPORT_ASSERTION_TYPE_MISSING]: Module
        "file:///home/runner/work/cacti/cacti/.tmp/test/test-cmd-api-server/
        plugin-import-from-github_test/5c711023-7573-4272-aee9-c743f5346ce7/
        fad4ca80-c93a-4611-9a68-207c9ad2085e/node_modules/@hyperledger/
        cactus-dummy-package/package.json" needs an import assertion of type "json"

            at new NodeError (node:internal/errors:405:5)
            at validateAssertions (node:internal/modules/esm/assert:95:15)
            at defaultLoad (node:internal/modules/esm/load:91:3)
            at nextLoad (node:internal/modules/esm/loader:163:28)
            at ESMLoader.load (node:internal/modules/esm/loader:603:26)
            at ESMLoader.moduleProvider (node:internal/modules/esm/loader:457:22)
            at new ModuleJob (node:internal/modules/esm/module_job:64:26)
            at ESMLoader.#createModuleJob (node:internal/modules/esm/loader:480:17)
            at ESMLoader.getModuleJob (node:internal/modules/esm/loader:434:34)
            at processTicksAndRejections (node:internal/process/task_queues:95:5)
    ...
```

Signed-off-by: Peter Somogyvari <peter.somogyvari@accenture.com>

packages/cactus-cmd-api-server/src/test/typescript/integration/plugin-import-from-github.test.ts

@@ -1,6 +1,7 @@
 import path from "path";
 import test, { Test } from "tape-promise/tape";
 import { v4 as uuidv4 } from "uuid";
+import { readFile } from "fs/promises";
 import { LogLevelDesc } from "@hyperledger/cactus-common";
 import {
   PluginImportAction,
@@ -68,7 +69,10 @@ test("can install plugins at runtime with specified version based on imports", a
     `${apiServerOptions.plugins[0].packageName}`,
     "package.json",
   );
-  const { name, version } = await import(packageFilePath);
+
+  const pkgJsonStr = await readFile(packageFilePath, "utf-8");
+  const { name, version } = JSON.parse(pkgJsonStr);
+
   t.comment(name);
   t.comment(version);
   t.strictEquals(

packages/cactus-cmd-api-server/src/test/typescript/integration/plugin-import-without-install.test.ts

@@ -13,6 +13,7 @@ import {
 } from "../../../main/typescript/public-api";
 import lmify from "lmify";
 import fs from "fs-extra";
+import { readFile } from "fs/promises";
 
 const logLevel: LogLevelDesc = "TRACE";
 
@@ -143,7 +144,8 @@ test("can instantiate plugins at runtime without install them", async (t: Test)
       "package.json",
     );
 
-    const { version } = await import(packageFilePath);
+    const pkgJsonStr = await readFile(packageFilePath, "utf-8");
+    const { version } = JSON.parse(pkgJsonStr);
 
     t2.strictEquals(
       version,
@@ -219,7 +221,8 @@ test("can instantiate plugins at runtime without install them", async (t: Test)
       "package.json",
     );
 
-    const { version } = await import(packageFilePath);
+    const pkgJsonStr = await readFile(packageFilePath, "utf-8");
+    const { version } = JSON.parse(pkgJsonStr);
 
     t2.strictEquals(
       version,

packages/cactus-test-cmd-api-server/src/test/typescript/integration/plugin-import-with-npm-install-version-selection.test.ts

@@ -1,6 +1,8 @@
 import path from "path";
 import test, { Test } from "tape-promise/tape";
 import { v4 as uuidv4 } from "uuid";
+import { readFile } from "fs/promises";
+
 import { LogLevelDesc } from "@hyperledger/cactus-common";
 import {
   PluginImportAction,
@@ -67,7 +69,9 @@ test("can install plugins at runtime with specified version based on imports", a
     `${apiServerOptions.plugins[0].packageName}`,
     "package.json",
   );
-  const { version } = await import(packageFilePath);
+  const pkgJsonStr = await readFile(packageFilePath, "utf-8");
+  const { version } = JSON.parse(pkgJsonStr);
+
   t.strictEquals(
     version,
     apiServerOptions.plugins[0].options.version,