Bump deprecated from 1.2.7 to 1.2.12 in /tool/conda/singa

Bumps [deprecated](https://github.com/tantale/deprecated) from 1.2.7 to 1.2.12.
- [Release notes](https://github.com/tantale/deprecated/releases)
- [Changelog](https://github.com/tantale/deprecated/blob/master/CHANGELOG.rst)
- [Commits](tantale/deprecated@v1.2.7...v1.2.12)

Signed-off-by: dependabot[bot] <support@github.com>

tool/conda/singa/requirements.txt

@@ -1,7 +1,7 @@
 swig==3.0.12
 openblas==0.3.9
 glog==0.3.5
-deprecated==1.2.7
+deprecated==1.2.12
 onnx==1.6.0
-deprecated==1.2.7
+deprecated==1.2.12
 libopenblas==0.3.9