Fix the automated merge tag script

This was currently broken for main-next i.e. JBR 21 as it was going
to the wrong directory. Additonally, JetBrains recently changed what
is being published on GitHub causing lots of noise in the commit message
see https://api.github.com/repos/JetBrains/JetBrainsRuntime/releases/tags/jbr-release-17.0.10b1171.14
for example.

Testing: Created aosp/2956578 with arg jbr-release-21.0.2b346.3
Change-Id: I8d18f7fc64edf2d2711c5ceacb7a64c314fb8d11
1 file changed