Update color for Groovy to match the logo on the website

[yogurtearl]

Change color for Groovy Language

Current: #e69f56
Proposed: #4298b8

From the Groovy logo on the groovy website:
https://github.com/apache/groovy-website/blob/f51c26b05f90edc05873a2a1ec676a8f58fe4f7c/site/src/site/assets/css/style.css#L487

Current Color:

Proposed Color in taken from the website:

• I am changing the color associated with a language
  • I have obtained agreement from the wider language community on this color change.
    • Thread on groovy mailing list
    • See color on https://groovy-lang.org/

[jnorthr]

cool idea - just do it !

[lildude]

If #5384 gets enough community support it'll bring Java and Groovy closer to each other again 😁

[GavinRay97]

If #5384 gets enough community support it'll bring Java and Groovy closer to each other again 😁

If not coordinated -- that is absolutely hilarious.
Please pick one or the other I guess haha.

[lildude]

I'm going to accept this colour change and lock comments on this issue once merged. If there are any disagreements or opinions about the colour change, they need to be discussed in the community discussion linked in the OP and not in this repo as this is a community requested and supported change, not a GitHub/Linguist initiated change.

Note, I'll accept the Java colour change in #5384 too under the same circumstances once it gets a community-based discussion link (/cc @ZacSweers as the author of that PR). When that happens both languages will still have similar looking colours:

Old

• Groovy: #e69f56
• Java: #b07219

New

• Groovy: #4298b8
• Java: #2a6277

[GavinRay97]

Ruh-roh