Remove pip upgrade and use pinned requirements (#5975)

Author: aslam-quad

community/front-end/ofe/infrastructure_files/gcs_bucket/webserver/django_requirements.in

@@ -0,0 +1 @@
+pip==26.1.2

community/front-end/ofe/infrastructure_files/gcs_bucket/webserver/django_requirements.txt

@@ -0,0 +1,12 @@
+#
+# This file is autogenerated by pip-compile with Python 3.12
+# by the following command:
+#
+#    pip-compile --allow-unsafe --generate-hashes community/front-end/ofe/infrastructure_files/gcs_bucket/webserver/django_requirements.in
+#
+
+# The following packages are considered to be unsafe in a requirements file:
+pip==26.1.2 \
+    --hash=sha256:382ff9f685ee3bc25864f820aa50505825f10f5458ffff07e30a6d96e5715cab \
+    --hash=sha256:f49cd134c61cf2fd75e0ce2676db03e4054504a5a4986d00f8299ae632dc4605
+    # via -r community/front-end/ofe/infrastructure_files/gcs_bucket/webserver/django_requirements.in

community/front-end/ofe/infrastructure_files/gcs_bucket/webserver/startup.sh

@@ -221,8 +221,8 @@ sudo su - gcluster -c /bin/bash <<EOF
   printf "\nEstablishing django environment..."
   python3.12 -m venv /opt/gcluster/django-env
   source /opt/gcluster/django-env/bin/activate
-  printf "\nUpgrading pip...\n"
-  pip install --upgrade pip
+  printf "\nInstalling pip...\n"
+  pip install --require-hashes -r /opt/gcluster/cluster-toolkit/community/front-end/ofe/infrastructure_files/gcs_bucket/webserver/django_requirements.txt
   printf "\nInstalling pip requirements...\n"
   pip install --require-hashes -r /opt/gcluster/cluster-toolkit/community/front-end/ofe/requirements.txt