fix: UBSAN_OPTIONS should use colon-separation (#1718)

### Briefly, what does this PR introduce?
This PR fixes a comma in UBSAN_OPTIONS, where options are supposed to be
colon-separated.

### What kind of change does this PR introduce?
- [x] Bug fix (issue: comma in UBSAN_OPTIONS)
- [ ] New feature (issue #__)
- [ ] Documentation update
- [ ] Other: __

### Please check if this PR fulfills the following:
- [ ] Tests for the changes have been added
- [ ] Documentation has been added / updated
- [ ] Changes have been communicated to collaborators

### Does this PR introduce breaking changes? What changes might users
need to make to their code?
No.

### Does this PR change default behavior?
No.

.github/workflows/linux-eic-shell.yml

@@ -43,7 +43,7 @@ env:
   JANA_OPTIONS: "-Pjana:ticker_interval=60000 -Pjana:extended_report=1 -Pjana:warmup_timeout=0 -Pjana:timeout=0"
   ASAN_OPTIONS: suppressions=${{ github.workspace }}/.github/asan.supp:malloc_context_size=20:detect_leaks=1:verify_asan_link_order=0:detect_stack_use_after_return=1:detect_odr_violation=1:new_delete_type_mismatch=0:intercept_tls_get_addr=0
   LSAN_OPTIONS: suppressions=${{ github.workspace }}/.github/lsan.supp
-  UBSAN_OPTIONS: suppressions=${{ github.workspace }}/.github/ubsan.supp:print_stacktrace=1:silence_unsigned_overflow=1,report_error_type=1
+  UBSAN_OPTIONS: suppressions=${{ github.workspace }}/.github/ubsan.supp:print_stacktrace=1:silence_unsigned_overflow=1:report_error_type=1
 
 jobs:
   env: