fix(ci): module-renaming workflow includes .go.tpl and .proto

[ARR4N]

Why this should be merged

Introduction of breaking upstream changes (inclusion of .go.tpl files) since the workflow was written. Resulted in failed smoke tests due to ABI-binding templates not being updated.

How this works

Only (1) is necessary for the fix but the others were added for convenience as relevant to this PR:

1. Replace module name in *.go.tpl files;
2. As above for *.proto files (go_package option);
3. Remove concurrency limitations as they're unnecessary with a manually triggered workflow; and
4. Display all tags that point to the source commit as they're useful for inspection of version.

How this was tested

Successful workflow run at upstream v1.15.0.

For the modifications, respectively:

1. Smoke tests pass and no .go.tpl files in Remnant references;
2. As above re remnant references;
3. N/A; and
4. Inspection of step output.