[Renovate] Update taiki-e/install-action action to v2.15.2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
taiki-e/install-action	action	patch	v2.15.1 -> v2.15.2

---

Release Notes

taiki-e/install-action (taiki-e/install-action)

v2.15.2: 2.15.2

Compare Source

• Update cargo-llvm-cov@latest to 0.5.26.

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.

[github-actions]

Filename                               Stmts    Miss  Cover    Missing
-----------------------------------  -------  ------  -------  ----------------------------------
src/changelog/comment_changes.rs         159     159  0.00%    107-405
src/changelog/fragment.rs                 55      35  36.36%   99-161
src/changelog/ronlog.rs                  118      72  38.98%   48-239
src/pattern/buffer.rs                     23       0  100.00%
src/pattern/io_processor.rs               17      17  0.00%    73-160
src/pattern/writer.rs                     75      30  60.00%   134-153, 188-200, 232-260
src/application.rs                        45      45  0.00%    100-175
src/cffreference.rs                       70       0  100.00%
src/increment_version.rs                 101      13  87.13%   123-124, 150-155, 234-235, 251-260
src/macros.rs                             17       0  100.00%
src/running.rs                             4       0  100.00%
src/version.rs                            47       0  100.00%
src/traits/append_as_line.rs               9       0  100.00%
src/traits/colour_message.rs               8       0  100.00%
src/traits/convert_buffer.rs              21       0  100.00%
src/traits/prefer.rs                       3       0  100.00%
src/traits/read_file.rs                   30      19  36.67%   54-55, 69-70, 78-94, 105-116
src/traits/rusty_object_notation.rs        9       0  100.00%
src/traits/to_stderr.rs                    4       0  100.00%
src/graphing/agd.rs                      157       0  100.00%
src/graphing/graph.rs                    144       0  100.00%
TOTAL                                   1116     390  65.05%