build(deps): update tower requirement from 0.4 to 0.5#52

Updates the requirements on [tower](https://github.com/tower-rs/tower) to permit the latest version. <details> <summary>Release notes</summary> <p><em>Sourced from <a href="https://github.com/tower-rs/tower/releases">tower's releases</a>.</em></p> <blockquote> <h2>tower 0.5.1</h2> <ul> <li>Fix minimum version of <code>tower-layer</code> dependency (<a href="https://redirect.github.com/tower-rs/tower/issues/787">#787</a>)</li> </ul> <p><a href="https://redirect.github.com/tower-rs/tower/issues/787">#787</a>: <a href="https://redirect.github.com/tower-rs/tower/pull/787">tower-rs/tower#787</a></p> </blockquote> </details> <details> <summary>Commits</summary> <ul> <li><a href="https://github.com/tower-rs/tower/commit/71551010acff922c5b51c280e49a15ad2d33df61"><code>7155101</code></a> Prepare release of v0.5.1 (<a href="https://redirect.github.com/tower-rs/tower/issues/791">#791</a>)</li> <li><a href="https://github.com/tower-rs/tower/commit/b2c48b46a3110af844b667ace7e14caae70a8a33"><code>b2c48b4</code></a> Bump dependency on tower-layer (<a href="https://redirect.github.com/tower-rs/tower/issues/787">#787</a>)</li> <li><a href="https://github.com/tower-rs/tower/commit/fec9e559e276ba9609f939d3b0d2e4fa0504de6f"><code>fec9e55</code></a> tower-layer: drop versions from dev dependencies (<a href="https://redirect.github.com/tower-rs/tower/issues/782">#782</a>)</li> <li><a href="https://github.com/tower-rs/tower/commit/646804d77eebf072dac180cb5e1256b9ee7e0229"><code>646804d</code></a> chore: prepare to release tower-0.5.0, tower-layer-0.3.3, tower-service-0.3.3...</li> <li><a href="https://github.com/tower-rs/tower/commit/7202cfeecd13ad6bbecd537d9799244313600db5"><code>7202cfe</code></a> chore: fix a few typos (<a href="https://redirect.github.com/tower-rs/tower/issues/780">#780</a>)</li> <li><a href="https://github.com/tower-rs/tower/commit/85080a56177e2b73835fd80cf371c6333110eae7"><code>85080a5</code></a> use workspace dependencies for tower (<a href="https://redirect.github.com/tower-rs/tower/issues/778">#778</a>)</li> <li><a href="https://github.com/tower-rs/tower/commit/88a7d3e01e109d8f20729c1b1f371e0752d53b0e"><code>88a7d3e</code></a> fix warnings found when running check/doc commands (<a href="https://redirect.github.com/tower-rs/tower/issues/779">#779</a>)</li> <li><a href="https://github.com/tower-rs/tower/commit/a6e98a7d6930b1907564d4ebcc3b0390b983c307"><code>a6e98a7</code></a> chore: update GitHub Actions CI (<a href="https://redirect.github.com/tower-rs/tower/issues/740">#740</a>)</li> <li><a href="https://github.com/tower-rs/tower/commit/74e925d2c8d079751db6fc14745972482f299d2f"><code>74e925d</code></a> chore: fix spelling errors (<a href="https://redirect.github.com/tower-rs/tower/issues/775">#775</a>)</li> <li><a href="https://github.com/tower-rs/tower/commit/89ac74f320f262e63d48b4eb603cc1053c005c48"><code>89ac74f</code></a> feat: Make new functions const when possible (<a href="https://redirect.github.com/tower-rs/tower/issues/760">#760</a>)</li> <li>Additional commits viewable in <a href="https://github.com/tower-rs/tower/compare/tower-0.4.0...tower-0.5.1">compare view</a></li> </ul> </details> <br /> You can trigger a rebase of this PR by commenting `@dependabot rebase`. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- <details> <summary>Dependabot commands and options</summary> <br /> You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot show <dependency name> ignore conditions` will show all of the ignore conditions of the specified dependency - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) </details> > **Note** > Automatic rebases have been disabled on this pull request as it has been open for over 30 days.