[Bambenek] Fix Dockerfile for CI

[helene-nguyen]

Description

Issue reported when build in CI

 > [3/6] RUN cd /opt/opencti-connector-bambenek &&     pip3 install --no-cache-dir -r requirements.txt &&     apk del git build-base:
#0 0.073 /bin/sh: cd: line 0: can't cd to /opt/opencti-connector-bambenek: No such file or directory
------
Dockerfile:12
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  11 |     
  12 | >>> RUN cd $SRC_DIR && \
  13 | >>>     pip3 install --no-cache-dir -r requirements.txt && \
  14 | >>>     apk del git build-base
  15 |     
--------------------
error: failed to solve: process "/bin/sh -c cd $SRC_DIR &&     pip3 install --no-cache-dir -r requirements.txt &&     apk del git build-base" did not complete successfully: exit code: 2

Exited with code exit status 1