[hotfix] signald: refine catch blocks around common crash causes

build off of this commit

• signald-fork@26bbc0d9

which incorporates these 2 MRs:

• signald-fork!17 (merged)
• signald-fork!18 (merged)

which do the following:

• omit sending user's phone number from logs
• always include channel phone number (to help correlate with crashes)
• actually print stack trace via logger.catching
• fix variable naming bug introduced in merging upstream changes

and bumps our signald docker container to:

• BRANCH "master"
• COMMIT_HASH "26bbc0d921215974906eecfdca474b95dfbd9d9b"
• LABEL verson="1.0.4"