Fix various Files.list resource leaks

[geoand]

The stream returned by Files.list must be closed according
to the Javadoc.
In most usages it was correctly done, but there were a few that had
slipped through

[quarkus-bot]

This workflow status is outdated as a new workflow run has been triggered.

Failing Jobs - Building 97f8cd4

Status	Name	Step	Failures	Logs	Raw logs
✖	Initial JDK 11 Build	Build	Failures	Logs	Raw logs

Failures

⚙️ Initial JDK 11 Build #

- Failing: independent-projects/tools/registry-client 
! Skipped: core/deployment core/test-extension/deployment core/test-extension/runtime and 627 more

📦 independent-projects/tools/registry-client

✖ Failed to execute goal net.revelc.code.formatter:formatter-maven-plugin:2.17.1:validate (default) on project quarkus-devtools-registry-client: File '/home/runner/work/quarkus/quarkus/independent-projects/tools/registry-client/src/main/java/io/quarkus/registry/client/maven/MavenRegistryCache.java' has not been previously formatted. Please format file and commit before running validation!

[quarkus-bot]

This workflow status is outdated as a new workflow run has been triggered.

Failing Jobs - Building 86a81b5

Status	Name	Step	Failures	Logs	Raw logs
✖	Initial JDK 11 Build	Build	Failures	Logs	Raw logs

Failures

⚙️ Initial JDK 11 Build #

- Failing: independent-projects/tools/registry-client 
! Skipped: core/deployment core/test-extension/deployment core/test-extension/runtime and 627 more

📦 independent-projects/tools/registry-client

✖ Failed to execute goal net.revelc.code.formatter:formatter-maven-plugin:2.17.1:validate (default) on project quarkus-devtools-registry-client: File '/home/runner/work/quarkus/quarkus/independent-projects/tools/registry-client/src/main/java/io/quarkus/registry/client/maven/MavenRegistryCache.java' has not been previously formatted. Please format file and commit before running validation!

[aloubyansky]

Looks good, except the formatting issue.

[geoand]

Formatting fixed

[quarkus-bot]

Failing Jobs - Building c9d6848

Status	Name	Step	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 11
✖	JVM Tests - JDK 11 Windows	Build	Failures	Logs	Raw logs
✔️	JVM Tests - JDK 17

Full information is available in the Build summary check run.

Failures

⚙️ JVM Tests - JDK 11 Windows #

- Failing: extensions/resteasy-classic/resteasy/deployment 
! Skipped: extensions/agroal/deployment extensions/apicurio-registry-avro/deployment extensions/avro/deployment and 284 more

📦 extensions/resteasy-classic/resteasy/deployment

✖ io.quarkus.resteasy.test.IncompletePostTestCase.testIncompleteWrite line 36 - More details - Source on GitHub

java.net.ConnectException: Connection refused: connect
	at java.base/java.net.PlainSocketImpl.connect0(Native Method)
	at java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:101)

[famod]

That IncompletePostTestCase is failing a lot lately -> flaky.