fix(compat): use String charset in URLEncoder.encode for Java 8 [APS-18945] [APS-18946]

- Replace StandardCharsets.UTF_8 (Charset) with "UTF-8" (String) in
  URLEncoder.encode calls — the Charset overload requires Java 10+
- Add throws Exception to @before setUp methods to satisfy the
  checked UnsupportedEncodingException declaration
- Pre-existing compilation failure on main branch; unrelated to the
  dependency version bumps in this PR

Author: karanshah-browserstack

src/test/java/com/browserstack/stepdefs/e2e/StackDemoSteps.java

@@ -38,7 +38,7 @@ public class StackDemoSteps {
     private static final String PRODUCT_IN_CART = "//*[@id=\"__next\"]/div/div/div[2]/div[2]/div[2]/div/div[3]/p[1]";
 
     @Before
-    public void setUp(Scenario scenario) {
+    public void setUp(Scenario scenario) throws Exception {
         playwright = Playwright.create();
         BrowserType browserType = playwright.chromium();
 
@@ -53,7 +53,7 @@ public void setUp(Scenario scenario) {
         caps.put("browser", "chrome");
         caps.put("sessionName", scenario.getName());
 
-        String encoded = URLEncoder.encode(new JSONObject(caps).toString(), StandardCharsets.UTF_8);
+        String encoded = URLEncoder.encode(new JSONObject(caps).toString(), "UTF-8");
         String wsEndpoint = "wss://cdp.browserstack.com/playwright?caps=" + encoded;
 
         browser = browserType.connect(wsEndpoint);

src/test/java/com/browserstack/stepdefs/local/StackLocalSteps.java

@@ -29,7 +29,7 @@ public class StackLocalSteps {
     private Page page;
 
     @Before
-    public void setUp(Scenario scenario) {
+    public void setUp(Scenario scenario) throws Exception {
         playwright = Playwright.create();
         BrowserType browserType = playwright.chromium();
 
@@ -45,7 +45,7 @@ public void setUp(Scenario scenario) {
         caps.put("browserstack.local", "true");
         caps.put("sessionName", scenario.getName());
 
-        String encoded = URLEncoder.encode(new JSONObject(caps).toString(), StandardCharsets.UTF_8);
+        String encoded = URLEncoder.encode(new JSONObject(caps).toString(), "UTF-8");
         String wsEndpoint = "wss://cdp.browserstack.com/playwright?caps=" + encoded;
 
         browser = browserType.connect(wsEndpoint);