chore(deps): update dependency io.projectreactor:reactor-core to v3.4…

….16 (#778)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [io.projectreactor:reactor-core](https://togithub.com/reactor/reactor-core) | `3.4.15` -> `3.4.16` | [![age](https://badges.renovateapi.com/packages/maven/io.projectreactor:reactor-core/3.4.16/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/io.projectreactor:reactor-core/3.4.16/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/io.projectreactor:reactor-core/3.4.16/compatibility-slim/3.4.15)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/io.projectreactor:reactor-core/3.4.16/confidence-slim/3.4.15)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>reactor/reactor-core</summary>

### [`v3.4.16`](https://togithub.com/reactor/reactor-core/releases/v3.4.16)

[Compare Source](https://togithub.com/reactor/reactor-core/compare/v3.4.15...v3.4.16)

Reactor-Core `3.4.16` is part of **`2020.0.17` Release Train (`Europium` SR17)**.

This service release contains a few bugfixes and improvements.

#### What's Changed

##### ✨ New features and improvements

-   Improve BoundedElasticScheduler to be less blocking by [@&#8203;simonbasle](https://togithub.com/simonbasle) in [reactor/reactor-core#2909
-   Add EmitFailureHandler.busyLoop flavor by [@&#8203;Animesh27](https://togithub.com/Animesh27) in [reactor/reactor-core#2943

##### 🐞 Bug fixes

-   Fix Mono.then not cancelling between Callable sources by [@&#8203;simonbasle](https://togithub.com/simonbasle) in [reactor/reactor-core#2934

##### 📖 Documentation, Tests and Build

-   Update Gradle to v7.4 in [reactor/reactor-core#2922
-   \[doc] Correct flux subscribe example in faq by [@&#8203;liukun2634](https://togithub.com/liukun2634) in [reactor/reactor-core#2924
-   Show how-to-fix hints in CI when preliminary steps fail (check of license headers, api compatibility) by [@&#8203;simonbasle](https://togithub.com/simonbasle) in [reactor/reactor-core#2932
-   \[guide] Remove ref to Swing/SwtScheduler in addons appendix by [@&#8203;simonbasle](https://togithub.com/simonbasle) in [reactor/reactor-core#2959
-   \[build] Have jcstress part of slowerChecks by [@&#8203;simonbasle](https://togithub.com/simonbasle) in [reactor/reactor-core#2958

##### 🆙 Dependency Upgrades

-   Update plugin spotless to v6.3.0 in [reactor/reactor-core#2925
-   Update plugin bnd to v6.2.0 in [reactor/reactor-core#2941
-   Update dependency org.awaitility:awaitility to v4.2.0 in [reactor/reactor-core#2945
-   Update dependency ch.qos.logback:logback-classic to v1.2.11 in [reactor/reactor-core#2946
-   Update dependency com.tngtech.archunit:archunit to v0.23.1 in [reactor/reactor-core#2940
-   Update plugin japicmp to v0.4.0 in [reactor/reactor-core#2948
-   Update dependency org.mockito:mockito-core to v4.4.0 in [reactor/reactor-core#2951
-   Update plugin download to v5.0.2 in [reactor/reactor-core#2950

#### New Contributors

-   [@&#8203;Animesh27](https://togithub.com/Animesh27) made their first contribution in [reactor/reactor-core#2943 👍

**Full Changelog**: reactor/reactor-core@v3.4.15...v3.4.16

</details>

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r2dbc/core/pom.xml

@@ -97,7 +97,7 @@
     <dependency>
       <groupId>io.projectreactor</groupId>
       <artifactId>reactor-core</artifactId>
-      <version>3.4.15</version>
+      <version>3.4.16</version>
     </dependency>
     <dependency>
       <groupId>io.netty</groupId>

r2dbc/mysql/pom.xml

@@ -43,7 +43,7 @@
       <dependency>
         <groupId>io.projectreactor</groupId>
         <artifactId>reactor-core</artifactId>
-        <version>3.4.15</version>
+        <version>3.4.16</version>
       </dependency>
       <dependency>
         <groupId>io.projectreactor.netty</groupId>

r2dbc/postgres/pom.xml

@@ -49,7 +49,7 @@
       <dependency>
         <groupId>io.projectreactor</groupId>
         <artifactId>reactor-core</artifactId>
-        <version>3.4.15</version>
+        <version>3.4.16</version>
       </dependency>
       <dependency>
         <groupId>io.projectreactor.netty</groupId>

r2dbc/sqlserver/pom.xml

@@ -44,7 +44,7 @@
       <dependency>
         <groupId>io.projectreactor</groupId>
         <artifactId>reactor-core</artifactId>
-        <version>3.4.15</version>
+        <version>3.4.16</version>
       </dependency>
       <dependency>
         <groupId>io.projectreactor.netty</groupId>