RFR: 8117: mvn clean install on JMC Core fails if path contains space

[Virag Purnam]

mvn clean install on JMC Core fails if path contains space. 

If there is a space in path, mvn clean install fails. Space has been replaced by %20 and it makes the path incorrect. To fix this issue URI has to be used in place of URL.
Please refer the below screen shot for error.
<img width="1776" alt="8117" src="https://github.com/openjdk/jmc/assets/97600378/83657740-3731-46a6-8b94-a1a092f0cf08">

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Commit messages:
 - 8117: mvn clean install on JMC Core fails if path contains space

Changes: https://git.openjdk.org/jmc/pull/512/files
 Webrev: https://webrevs.openjdk.org/?repo=jmc&pr=512&range=00
  Issue: https://bugs.openjdk.org/browse/JMC-8117
  Stats: 11 lines in 2 files changed: 3 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jmc/pull/512.diff
  Fetch: git fetch https://git.openjdk.org/jmc.git pull/512/head:pull/512

PR: https://git.openjdk.org/jmc/pull/512