Move azure-core pin into the dev dependency list (#3022)

setup.cfg

@@ -68,13 +68,6 @@ install_requires =
     quantulum3  # quantities extraction from text
     posthog # telemetry
     azure-ai-formrecognizer==3.2.0b2  # forms reader
-    # azure-core is a dependency of azure-ai-formrecognizer
-    # In order to stop malicious pip backtracking during pip install farm-haystack[all] documented in https://github.com/deepset-ai/haystack/issues/2280
-    # we have to resolve a dependency version conflict ourself.
-    # azure-core>=1.23 conflicts with pydoc-markdown's dependency on databind>=1.5.0 which itself requires typing-extensions<4.0.0
-    # azure-core>=1.23 needs typing-extensions>=4.0.1
-    # pip unfortunately backtracks into the databind direction ultimately getting lost.
-    azure-core<1.23
     # audio's espnet-model-zoo requires huggingface-hub version <0.8 while we need >=0.5 to be able to use create_repo in FARMReader
     huggingface-hub<0.8.0,>=0.5.0
 
@@ -209,6 +202,13 @@ dev =
     black[jupyter]==22.6.0
     # Documentation
     pydoc-markdown==4.5.1   # FIXME Unpin!
+    # azure-core is a dependency of azure-ai-formrecognizer
+    # In order to stop malicious pip backtracking during pip install farm-haystack[all] documented in https://github.com/deepset-ai/haystack/issues/2280
+    # we have to resolve a dependency version conflict ourself.
+    # azure-core>=1.23 conflicts with pydoc-markdown's dependency on databind>=1.5.0 which itself requires typing-extensions<4.0.0
+    # azure-core>=1.23 needs typing-extensions>=4.0.1
+    # pip unfortunately backtracks into the databind direction ultimately getting lost.
+    azure-core<1.23
     mkdocs
     jupytercontrib
     watchdog  #==1.0.2