[jdk11u-dev] RFR: 8267695: Bump update version for OpenJDK: jdk-11.0.13

[Goetz Lindenmaier]

Change to bump the version to 11.0.13 and to update .jcheck/conf.

That is needed so that JBS annotates the right version when closing changes.

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Commit messages:
 - 8267695: Bump update version for OpenJDK: jdk-11.0.13

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/7/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=7&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8267695
  Stats: 33 lines in 2 files changed: 29 ins; 0 del; 4 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/7.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/7/head:pull/7

PR: https://git.openjdk.java.net/jdk11u-dev/pull/7