Bump guava from 30.0-jre to 30.1-jre in /core

[dependabot]

Bumps guava from 30.0-jre to 30.1-jre.

Release notes

Sourced from guava's releases.

30.1

Maven

<dependency>
  <groupId>com.google.guava</groupId>
  <artifactId>guava</artifactId>
  <version>30.1-jre</version>
  <!-- or, for Android: -->
  <version>30.1-android</version>
</dependency>

Javadoc

• 30.1-jre
• 30.1-android

JDiff

• 30.1-jre vs. 30.0-jre
• 30.1-android vs. 30.0-android
• 30.1-android vs. 30.1-jre

Changelog

UPDATE: If you use guava-android in an Android project (as opposed to from a Java VM), you will need to enable desugaring of Java 8 language features if you have not already done so. (And if you are releasing an Android library, then anyone who uses that library will also have to enable desugaring.) We had expected for nearly all Android projects to already be set up this way, but we have gotten a report of at least one that is not. If this causes problems for you, please let us know on google/guava#5358. We are figuring out our next steps.

• Introduced a warning log message when running guava-android under a Java 7 VM. (Android VMs are unaffected.) This warning is not guaranteed to be logged when running under Java 7, so please don't rely on it as your only warning about future problems. If the warning itself causes you trouble, you can eliminate it by silencing the logger for com.google.common.base.MoreObjects$ToStringHelper (which is used only for this warning). This warning prepares for removing support for Java 7 in 2021. Please report any problems. We have tried to make the warning as safe as possible, but anytime a common library logs, there is the potential for NullPointerException or even deadlock. (To be clear, Guava will not log under Java 8 or Android, but it may log under Java 7.) (dc52e6e385)
• base: Deprecated StandardSystemProperty.JAVA_EXT_DIRS. We do not plan to remove the API, but note that, under recent versions of Java, that property always has a value of null. (38abf07772)
• net: Added HttpHeaders constants for Origin-Isolation and X-Request-ID. (a48fb4f724, 8319d201cd)
• reflect: Added ClassInfo.isTopLevel(). (410627262b)
• util.concurrent: Added ClosingFuture.submitAsync(AsyncClosingCallable). (c5e2d8d5cb)

Commits

• See full diff in compare view

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[rnorth]

@dependabot rebase