Fix efr32 dockerfile build (#27548)

integrations/docker/images/chip-build-efr32/Dockerfile

diff --git a/integrations/docker/images/chip-build-efr32/Dockerfile b/integrations/docker/images/chip-build-efr32/Dockerfile
index 12f63d8..8164044 100644
--- a/integrations/docker/images/chip-build-efr32/Dockerfile
+++ b/integrations/docker/images/chip-build-efr32/Dockerfile
@@ -22,18 +22,18 @@
 ENV GSDK_ROOT=/gecko_sdk/
 
 # SLC-cli install
+# TODO: figure out a way to make this a fixed version. Currently a moving target.
 RUN wget https://www.silabs.com/documents/login/software/slc_cli_linux.zip && \
     unzip ./slc_cli_linux.zip -d ./ && \
-    rm ./slc_cli_linux.zip && \
-    cd ./slc_cli && \
-    pip3 install -r ./requirements.txt
+    rm ./slc_cli_linux.zip
 
 ENV PATH="${PATH}:/slc_cli/"
 
 # Install Python Packages
 
-# SLC required Python Packages
+# codegen.py build requirements
+# TODO: why are these added here instead of build-env?
 RUN pip3 install lark jinja2 stringcase
 
-# Sphinx required Python Packages
+# Sphinx dependencies (for slc-cli)
 RUN pip3 install myst_parser sphinx_rtd_theme sphinx_tabs linkify-it-py

integrations/docker/images/chip-build/version

diff --git a/integrations/docker/images/chip-build/version b/integrations/docker/images/chip-build/version
index 64293fb..88b95cb 100644
--- a/integrations/docker/images/chip-build/version
+++ b/integrations/docker/images/chip-build/version
@@ -1 +1 @@
-0.7.22 Version bump reason: Update Silicon Labs docker
+0.7.23 Version bump reason: make slc-cli not use requirements.txt for efr32