fix test since secrets are not written to temp path anymore

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

__tests__/context.test.ts

@@ -389,7 +389,7 @@ ccc`],
         'build',
         '--file', './test/Dockerfile',
         '--iidfile', imageIDFilePath,
-        '--secret', `id=MY_SECRET,src=${tmpName}`,
+        '--secret', `id=MY_SECRET,src=${path.join(fixturesDir, 'secret.txt')}`,
         '--builder', 'builder-git-context-2',
         '--network', 'host',
         '--push',