chore: post v11.0.0 release chores

[srdtrk]

Description

closes: #XXXX

---

Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Linked to GitHub issue with discussion and accepted design, OR link to spec that describes this work.
• Include changelog entry when appropriate (e.g. chores should be omitted from changelog).
• Wrote unit and integration tests if relevant.
• Updated documentation (docs/) if anything is changed.
• Added godoc comments if relevant.
• Self-reviewed Files changed in the GitHub PR explorer.
• Provide a conventional commit message to follow the repository standards.

[greptile-apps]

Greptile Summary

This post-v11.0.0 release chore pins CI upgrade tags to specific release versions (v10.5.1, v11.0.0), removes the wasm-simd image override (now that standard simd correctly wires the IBC v2 router), and refreshes docs (CHANGELOG.md, RELEASES.md, README.md) to reflect the new v11 release line.

• P1 — CHANGELOG.md: The [Unreleased] section contains a duplicate ### Improvements heading (lines 45 and 53), left over from the template restructuring; one must be removed to avoid contributor confusion and changelog-parser failures.
• P2 — CHANGELOG.md line 84: The backport reference for \#8863 links to /pull/8864 (the wrong PR).
• P2 — RELEASES.md lines 138–139: The blockquote for the callbacks-merged note uses a bare > on its own line, which won't render correctly.

Confidence Score: 4/5

• Safe to merge after resolving the duplicate ### Improvements heading in the [Unreleased] changelog section.
• All CI and config changes are correct and well-motivated. One P1 structural error exists in CHANGELOG.md (duplicate section heading) that should be fixed before merging to avoid confusion for contributors targeting the next release cycle. The two P2 findings (wrong backport link, broken blockquote) are easy one-line fixes worth catching now.
• CHANGELOG.md — duplicate ### Improvements in [Unreleased] and incorrect backport link on line 84.

Important Files Changed

Filename	Overview
CHANGELOG.md	Added v11.0.0 release block and refreshed [Unreleased] template, but introduced a duplicate ### Improvements heading and a self-referencing backport link for PR #8863.
RELEASES.md	Updated EOL table and version matrix for v11.0.x; minor broken blockquote syntax for the callbacks-merged note.
e2e/ci-e2e-config.yaml	Pinned v10 and v11 upgrade plan tags to specific release tags (v10.5.1, v11.0.0) instead of branch names; looks correct.
.github/workflows/e2e-compatibility.yaml	Removed wasm-simd image override workaround for IBC v2 transfer tests — appropriate now that the standard simd properly wires the IBC v2 router in v11.
README.md	Added v11 to the list of supported release lines; straightforward and correct.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[v11.0.0 Released] --> B[Pin CI tags to specific versions]
    A --> C[Update docs]
    A --> D[Remove workarounds]

    B --> B1["e2e-config: branch-release-v10.5.x → v10.5.1"]
    B --> B2["e2e-config: release-v11.0.x → v11.0.0"]

    C --> C1["CHANGELOG: add v11.0.0 block\nreset Unreleased template"]
    C --> C2["RELEASES.md: add v11.0.x EOL\nupdate version matrix"]
    C --> C3["README: add v11 to supported releases"]

    D --> D1["e2e-compatibility.yaml:\nremove wasm-simd override\nfor IBC v2 transfer tests"]

    C1 -->|"⚠️ Duplicate ### Improvements\nin Unreleased section"| E[Needs fix before merge]

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_{Reviews (1): Last reviewed commit: "e2e: compat from" | Re-trigger Greptile}

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 66.59%. Comparing base (13916a8) to head (1646793).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8903   +/-   ##
=======================================
  Coverage   66.59%   66.59%           
=======================================
  Files         326      326           
  Lines       17157    17157           
=======================================
  Hits        11425    11425           
  Misses       5035     5035           
  Partials      697      697           

Flag	Coverage Δ
08-wasm	65.04% <ø> (ø)
ibc-go	66.64% <ø> (ø)

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