build: do not mark selenium dependencies versions as strict

https://docs.gradle.org/current/userguide/dependency_downgrade_and_exclude.html: "conflicting strict dependencies will trigger a build failure that you have to resolve".

An attempt to use `java-client:8.0.0-beta` in conjunction with Selenium 4.1.0 leads to build failures, like:
```
   > Could not resolve org.seleniumhq.selenium:selenium-remote-driver:{strictly 4.0.0}.
     Required by:
         project :xxxxxxx > io.appium:java-client:8.0.0-beta
```
In a favor of flexibility the selenium dependencies versions are not marked as strict.

build.gradle

@@ -31,21 +31,9 @@ dependencies {
     compileOnly 'org.projectlombok:lombok:1.18.22'
     annotationProcessor 'org.projectlombok:lombok:1.18.22'
 
-    api ('org.seleniumhq.selenium:selenium-api') {
-        version {
-            strictly "${seleniumVersion}"
-        }
-    }
-    api ('org.seleniumhq.selenium:selenium-remote-driver') {
-        version {
-            strictly "${seleniumVersion}"
-        }
-    }
-    implementation ('org.seleniumhq.selenium:selenium-support') {
-        version {
-            strictly "${seleniumVersion}"
-        }
-    }
+    api "org.seleniumhq.selenium:selenium-api:${seleniumVersion}"
+    api "org.seleniumhq.selenium:selenium-remote-driver:${seleniumVersion}"
+    implementation "org.seleniumhq.selenium:selenium-support:${seleniumVersion}"
     implementation 'com.google.code.gson:gson:2.8.9'
     implementation 'commons-codec:commons-codec:1.15'
     implementation 'cglib:cglib:3.3.0'
@@ -61,11 +49,7 @@ dependencies {
     testImplementation (group: 'io.github.bonigarcia', name: 'webdrivermanager', version: '5.0.3') {
         exclude group: 'org.seleniumhq.selenium'
     }
-    testImplementation ('org.seleniumhq.selenium:selenium-chrome-driver') {
-        version {
-            strictly "${seleniumVersion}"
-        }
-    }
+    testImplementation "org.seleniumhq.selenium:selenium-chrome-driver:${seleniumVersion}"
 }
 
 ext {