Fix: update dependencies runbook and script

[dlachaume]

Content

This PR includes a fix to the steps in the Upgrade the project's dependencies in the repository runbook and the associated script upgrade_dependencies.sh:

• Reorder steps to compile mithril-client-wasm crate before updating the explorer
• Remove from the script the npm package version bump (in /mithril-client-wasm/pkg file) for mithril-client-wasm

Pre-submit checklist

• Branch
  • Tests are provided (if possible)
  • Crates versions are updated (if relevant)
  • CHANGELOG file is updated (if relevant)
  • Commit sequence broadly makes sense
  • Key commits have useful messages
• PR
  • No clippy warnings in the CI
  • Self-reviewed the diff
  • Useful pull request description
  • Reviewer requested
• Documentation
  • Update README file (if relevant)
  • Update documentation website (if relevant)
  • Add dev blog post (if relevant)

[github-actions]

Test Results

    4 files  ±0     54 suites  ±0   9m 24s ⏱️ -1s
1 352 tests ±0  1 352 ✅ ±0  0 💤 ±0  0 ❌ ±0 
1 560 runs  ±0  1 560 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit fb3a449. ± Comparison against base commit 47cdaea.

♻️ This comment has been updated with latest results.

[jpraynaud]

LGTM 👍