Bump poetry from 1.1.11 to 1.1.12 in /.github/workflows (#487)

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/requirements.txt

@@ -1,2 +1,2 @@
 pip==21.3.1
-poetry==1.1.11
+poetry==1.1.12