Bump every template's VERSION to publish the git.octoturge.com fix

The host-gateway change in the previous commit only takes effect on a new
template version - bump every template's VERSION file from 1 to 2 so
coder-templates.yml actually pushes it instead of skipping as "already
pushed". Existing workspaces need a stop/start against the new version to
pick up the updated docker_container host mapping.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01YRq8ts9zwge8Rttbuku9FQ

templates/3d-printing/VERSION

@@ -1 +1 @@
-1
+2

templates/cobol/VERSION

@@ -1 +1 @@
-1
+2

templates/default/VERSION

@@ -1 +1 @@
-1
+2

templates/python/VERSION

@@ -1 +1 @@
-1
+2

templates/ttrpg/VERSION

@@ -1 +1 @@
-1
+2

templates/web/VERSION

@@ -1 +1 @@
-1
+2