chore(deps): update dependency com.squareup.okhttp3:okhttp to v4.7.2 (#2945)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.squareup.okhttp3:okhttp](https://square.github.io/okhttp/) ([source](https://togithub.com/square/okhttp)) | patch | `4.7.1` -> `4.7.2` |

---

### Release Notes

<details>
<summary>square/okhttp</summary>

### [`v4.7.2`](https://togithub.com/square/okhttp/blob/master/CHANGELOG.md#Version-472)

_2020-05-20_

-   Fix: Don't crash inspecting whether the host platform is JVM or Android. With 4.7.0 and 4.7.1 we
    had a crash `IllegalArgumentException: Not a Conscrypt trust manager` because we depended on
    initialization order of companion objects.

</details>

---

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appengine-java11/gaeinfo/pom.xml

@@ -59,7 +59,7 @@ Copyright 2019 Google LLC
     <dependency>
       <groupId>com.squareup.okhttp3</groupId>
       <artifactId>okhttp</artifactId>
-      <version>4.7.1</version>
+      <version>4.7.2</version>
       <scope>provided</scope>
     </dependency>
 

appengine-java8/gaeinfo/pom.xml

@@ -56,7 +56,7 @@ Copyright 2017 Google Inc.
     <dependency>
       <groupId>com.squareup.okhttp3</groupId>
       <artifactId>okhttp</artifactId>
-      <version>4.7.1</version>
+      <version>4.7.2</version>
     </dependency>
 
     <dependency>

appengine-java8/metadata/pom.xml

@@ -51,7 +51,7 @@ Copyright 2017 Google Inc.
     <dependency>
       <groupId>com.squareup.okhttp3</groupId>
       <artifactId>okhttp</artifactId>
-      <version>4.7.1</version>
+      <version>4.7.2</version>
     </dependency>
 
     <dependency>

flexible/gaeinfo/pom.xml

@@ -53,7 +53,7 @@ Copyright 2017 Google Inc.
     <dependency>
       <groupId>com.squareup.okhttp3</groupId>
       <artifactId>okhttp</artifactId>
-      <version>4.7.1</version>
+      <version>4.7.2</version>
     </dependency>
 
     <dependency>

run/authentication/pom.xml

@@ -37,7 +37,7 @@ limitations under the License.
     <dependency>
       <groupId>com.squareup.okhttp3</groupId>
       <artifactId>okhttp</artifactId>
-      <version>4.7.1</version>
+      <version>4.7.2</version>
     </dependency>
 
     <dependency>

run/logging-manual/pom.xml

@@ -54,7 +54,7 @@ limitations under the License.
     <dependency>
       <groupId>com.squareup.okhttp3</groupId>
       <artifactId>okhttp</artifactId>
-      <version>4.7.1</version>
+      <version>4.7.2</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>

run/markdown-preview/editor/pom.xml

@@ -54,7 +54,7 @@
     <dependency>
       <groupId>com.squareup.okhttp3</groupId>
       <artifactId>okhttp</artifactId>
-      <version>4.7.1</version>
+      <version>4.7.2</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>