TF: unpin maximum TF version (#18917)

docker/transformers-cpu/Dockerfile

@@ -15,7 +15,7 @@ RUN apt update && \
 RUN python3 -m pip install --no-cache-dir --upgrade pip && \
     python3 -m pip install --no-cache-dir \
     jupyter \
-    tensorflow-cpu==2.9.1 \
+    tensorflow-cpu \
     torch
 
 WORKDIR /workspace
@@ -23,4 +23,4 @@ COPY . transformers/
 RUN cd transformers/ && \
     python3 -m pip install --no-cache-dir .
 
-CMD ["/bin/bash"]
+CMD ["/bin/bash"]