fix: add mise activatate to prepare-dev-env.sh

mentioned in merge request apps-script-scripts!12

mentioned in merge request gcp-quota-exporter!101

mentioned in merge request gitlab-com/gl-infra/platform/gitlab-issue-report-kit!65

mentioned in merge request gitlab-com/content-sites/handbook-tools/hugolint!114 (closed)

mentioned in merge request terra-transformer!571 (merged)

mentioned in merge request label-wrangler!66 (merged)

mentioned in merge request gitlab-com/runbooks!8568 (merged)

mentioned in merge request gitlab-com/gl-infra/gitlab-dedicated/library/ip-allowlist-deny-blackbox!109 (merged)

mentioned in merge request gitlab-com/gl-infra/gitlab-dedicated/library/dedicated-aws-exporter!24 (merged)

mentioned in merge request gitlab-com/gl-infra/platform/runway/example-service!251 (merged)

mentioned in merge request cmbr!348 (merged)

mentioned in merge request gitlab-com/gl-infra/data-access/durability/gitlab-backup-cli!32 (merged)

mentioned in merge request gitlab-com/gl-infra/observability/tenant-observability/config-manager!182 (merged)

mentioned in merge request gitlab-com/gl-infra/terraform-modules/observability/tenant-observability-stack!242 (merged)

mentioned in merge request autolabels!21 (merged)

mentioned in merge request jsonnet-tool!208 (merged)

mentioned in merge request ringctl!247 (merged)

mentioned in merge request common-ci-tasks-images!508 (merged)

mentioned in merge request common-ci-task-tests!187 (merged)

mentioned in merge request andreas.brandl/watertemp-exporter!31 (closed)

mentioned in merge request gitlab-com/gl-infra/gitlab-dedicated/library/byok-status-exporter!293 (merged)

mentioned in merge request common-ci-tasks!944 (merged)

mentioned in merge request gitlab-com/gl-infra/gitlab-dedicated/library/terraform/resource-tagger!20 (merged)

mentioned in merge request gitlab-com/content-sites/handbook-tools/hugolint!127 (merged)

mentioned in merge request andreas.brandl/watertemp-exporter!35