Allow underscores in devkit distribution name when publishing

[sxa]

Fedora riscv64 devkit has Fedora_28 in the name which is blocked by the devkit publish tool's regex:

+ JAVA_HOME=/usr/lib/jvm/temurin-21-jdk-arm64 bash ./sbin/PublishDevKit.sh
ERROR: devkit file does not match required regex pattern: devkit-gcc-14.2.0-Fedora_28-b00-riscv64-linux-gnu.tar.xz
ERROR: devkit file does not match required regex pattern: devkit-gcc-14.2.0-Fedora_28-b00-riscv64-linux-gnu.tar.xz.sha256.txt
ERROR: devkit file does not match required regex pattern: devkit-gcc-14.2.0-Fedora_28-b00-riscv64-linux-gnu.tar.xz.sig
ERROR: Some devkit filenames are not valid...

Related slack thread: https://adoptium.slack.com/archives/C09NW3L2J/p1743177415374159

[sxa]

Tested at https://ci.adoptium.net/job/build-scripts/job/release/job/publish_devkit_tool/123/ (dry-run) and https://ci.adoptium.net/job/build-scripts/job/release/job/publish_devkit_tool/124 (Publish) and those jobs have passed and the devkit has appeared at https://github.com/adoptium/devkit-binaries/releases/tag/gcc-14.2.0-Fedora_28-b00

When this is merged the changes to to use this branch in the publish_devkit_tool job should be reverted.

[judovana]

Just question. In case of if [[ $file =~ $regex ]]; does "." need escaping when in [] ?

[judovana]

Afaik not, so the regex="^devkit-([[:alnum:]]+)-([[:digit:].]+)-([[:alnum:]._]+)-([[:alnum:]]+)-([[:alnum:]_]+)(-linux-gnu)\.(tar\.xz|tar\.xz\.sha256\.txt|tar\.xz\.sig)$"; would be more correct. But I can not swear. Have not found a explicit documentation to it, and experiemtnets suggests it do not meter.

`

[andrew-m-leonard]

lgtm

[sxa]

Just question. In case of if [[ $file =~ $regex ]]; does "." need escaping when in [] ?

Hmmm might be worth looking into that separately. I'm all for keeping it simpler if possible, but for the purposes of this PR I think I'll leave the existing bits as-is :-) I don't tend to use these bash constructs so hadn't thought about it!