Install MicroBuild in temporary directory

[ellahathaway]

Resolves #15731 and #16259

• Test pipeline run without the fix, failed as expected
• Test pipeline run with the fix, succeeded

[ellahathaway]

/backport to release/10.0

[github-actions]

Started backporting to release/10.0 (link to workflow run)

[github-actions]

@ellahathaway backporting to release/10.0 failed, the patch most likely resulted in conflicts. Please backport manually!

git am output

$ git am --3way --empty=keep --ignore-whitespace --keep-non-patch changes.patch

Applying: Install MicroBuild in temporary directory
Using index info to reconstruct a base tree...
M	eng/common/core-templates/steps/install-microbuild.yml
Falling back to patching base and 3-way merge...
Auto-merging eng/common/core-templates/steps/install-microbuild.yml
CONFLICT (content): Merge conflict in eng/common/core-templates/steps/install-microbuild.yml
error: Failed to merge in the changes.
hint: Use 'git am --show-current-patch=diff' to see the failed patch
hint: When you have resolved this problem, run "git am --continue".
hint: If you prefer to skip this patch, run "git am --skip" instead.
hint: To restore the original branch and stop patching, run "git am --abort".
hint: Disable this message with "git config set advice.mergeConflict false"
Patch failed at 0001 Install MicroBuild in temporary directory
Error: The process '/usr/bin/git' failed with exit code 128

Link to workflow output