conda-update: add page (#19078)

Author: msaf9

pages/common/conda-update.md

@@ -0,0 +1,24 @@
+# conda update
+
+> Update packages within a conda environment, including conda itself.
+> More information: <https://docs.conda.io/projects/conda/en/latest/commands/update.html>.
+
+- Update all packages in the current environment:
+
+`conda update {{[--all|--update-all]}}`
+
+- Update a specific package in the current environment:
+
+`conda update {{package_name}}`
+
+- Update conda itself in the base environment:
+
+`conda update {{[-n|--name]}} base conda`
+
+- Update packages while ignoring pinned packages:
+
+`conda update --no-pin`
+
+- Update packages in offline mode:
+
+`conda update --offline`