Bump Python requirement lxml to 4.9.2

Dockerfile

-FROM registry.gitlab.com/teklia/arkindex/tasks/base:0.4.7 as build
+FROM registry.gitlab.com/teklia/arkindex/tasks/base:lxml-4.9.2 as build
 
 RUN mkdir build
 ADD . build
 RUN cd build && python3 setup.py sdist
 
-FROM registry.gitlab.com/teklia/arkindex/tasks/base:0.4.7
+FROM registry.gitlab.com/teklia/arkindex/tasks/base:lxml-4.9.2
 
 ARG CLIENT_BRANCH=master
 ARG CLIENT_ID=7122981

base/requirements.txt

 cryptography==39.0.0
-lxml==4.6.3
+lxml==4.9.2
 pdf2image==1.16.0
 Pillow==8.3.1
 zstandard==0.15.2

requirements.txt

-arkindex-client==1.0.12
+arkindex-client==1.0.13
 boto3==1.26.113
 docker==5.0.3
 ijson==3.1.4
@@ -7,4 +7,4 @@ pdfminer.six==20221105
 Shapely==1.8.0
 teklia-toolbox==0.1.3
 tenacity==8.2.2
-transkribus-client==0.3.3
+transkribus-client==0.3.4rc1